The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:3979 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    Security Fix(es):

    * libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)

    * firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)

    * firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8,     Firefox 148 and Thunderbird 148 (CVE-2026-2793)

    * firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771)

    * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External     Software (CVE-2026-2776)

    * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)

    * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)

    * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)

    * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component     (CVE-2026-2783)

    * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)

    * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)

    * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)

    * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)

    * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)

    * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)

    * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)

    * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)

    * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and     Thunderbird 148 (CVE-2026-2792)

    * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)

    * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)

    * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component     (CVE-2026-2760)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)

    * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)

    * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)

    * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)

    * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component     (CVE-2026-2778)

    * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)

    * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:3983 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    Security Fix(es):

    * libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)

    * firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)

    * firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8,     Firefox 148 and Thunderbird 148 (CVE-2026-2793)

    * firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771)

    * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External     Software (CVE-2026-2776)

    * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)

    * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)

    * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)

    * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component     (CVE-2026-2783)

    * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)

    * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)

    * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)

    * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)

    * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)

    * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)

    * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)

    * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)

    * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and     Thunderbird 148 (CVE-2026-2792)

    * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)

    * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)

    * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component     (CVE-2026-2760)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)

    * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)

    * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)

    * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)

    * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component     (CVE-2026-2778)

    * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)

    * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:3984 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and     portability.

    Security Fix(es):

    * libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)

    * firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)

    * firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8,     Firefox 148 and Thunderbird 148 (CVE-2026-2793)

    * firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771)

    * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External     Software (CVE-2026-2776)

    * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)

    * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)

    * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)

    * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component     (CVE-2026-2783)

    * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)

    * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)

    * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)

    * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)

    * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)

    * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)

    * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)

    * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)

    * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and     Thunderbird 148 (CVE-2026-2792)

    * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)

    * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)

    * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component     (CVE-2026-2760)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)

    * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)

    * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)

    * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)

    * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component     (CVE-2026-2778)

    * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)

    * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:4152 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and     portability.

    Security Fix(es):

    * libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)

    * firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)

    * firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8,     Firefox 148 and Thunderbird 148 (CVE-2026-2793)

    * firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771)

    * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External     Software (CVE-2026-2776)

    * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)

    * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)

    * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)

    * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component     (CVE-2026-2783)

    * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)

    * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)

    * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)

    * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)

    * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)

    * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)

    * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)

    * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)

    * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and     Thunderbird 148 (CVE-2026-2792)

    * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)

    * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)

    * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component     (CVE-2026-2760)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)

    * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)

    * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)

    * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)

    * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component     (CVE-2026-2778)

    * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)

    * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0166 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-2793:
    Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147     and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with     enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects     Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2792:
    Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147.
    Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of     these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148, Firefox     ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2791:
    Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox < 148, Firefox     ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2790:
    Same-origin policy bypass in the Networking: JAR component. This vulnerability affects Firefox < 148,     Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2789:
    Use-after-free in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR     < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2788:
    Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148,     Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2787:
    Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148,     Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2786:
    Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR <     140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2785:
    Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR     < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2784:
    Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 148, Firefox ESR <     140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2783:
    Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This     vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2782:
    Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR <     140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2781:
    Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR     < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2780:
    Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148, Firefox ESR <     140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2779:
    Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox < 148,     Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2778:
    Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability     affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird <     140.8.

    CVE-2026-2777:
    Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox     ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2776:
    Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This     vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and     Thunderbird < 140.8.

    CVE-2026-2775:
    Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR     < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2774:
    Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR <     115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2773:
    Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148,     Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2772:
    Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox     ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2771:
    Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox     ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2770:
    Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability affects Firefox < 148, Firefox     ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2769:
    Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR     < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2768:
    Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR     < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2767:
    Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148, Firefox     ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2766:
    Use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox     ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2765:
    Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR <     140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2764:
    JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects     Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2763:
    Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR <     115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2762:
    Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148,     Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2761:
    Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR     < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2760:
    Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This     vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and     Thunderbird < 140.8.

    CVE-2026-2759:
    Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox <     148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2758:
    Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, Firefox ESR <     115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2757:
    Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox <     148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

    CVE-2026-2447:
    Heap buffer overflow in libvpx. This vulnerability affects Firefox < 147.0.4, Firefox ESR < 140.7.1,     Firefox ESR < 115.32.1, Thunderbird < 140.7.2, and Thunderbird < 147.0.2.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0880-1 advisory.

    Mozilla Thunderbird 140.8 MFSA 2026-17 (bsc#1258568):

    - CVE-2026-2757: Incorrect boundary conditions in the WebRTC: Audio/Video       component
    - CVE-2026-2758: Use-after-free in the JavaScript: GC component
    - CVE-2026-2759: Incorrect boundary conditions in the Graphics: ImageLib       component
    - CVE-2026-2760: Sandbox escape due to incorrect boundary conditions in the       Graphics: WebRender component
    - CVE-2026-2761: Sandbox escape in the Graphics: WebRender component
    - CVE-2026-2762: Integer overflow in the JavaScript: Standard Library component
    - CVE-2026-2763: Use-after-free in the JavaScript Engine component
    - CVE-2026-2764: JIT miscompilation, use-after-free in the JavaScript Engine:
      JIT component
    - CVE-2026-2765: Use-after-free in the JavaScript Engine component
    - CVE-2026-2766: Use-after-free in the JavaScript Engine: JIT component
    - CVE-2026-2767: Use-after-free in the JavaScript: WebAssembly component
    - CVE-2026-2768: Sandbox escape in the Storage: IndexedDB component
    - CVE-2026-2769: Use-after-free in the Storage: IndexedDB component
    - CVE-2026-2770: Use-after-free in the DOM: Bindings (WebIDL) component
    - CVE-2026-2771: Undefined behavior in the DOM: Core & HTML component
    - CVE-2026-2772: Use-after-free in the Audio/Video: Playback component
    - CVE-2026-2773: Incorrect boundary conditions in the Web Audio component
    - CVE-2026-2774: Integer overflow in the Audio/Video component
    - CVE-2026-2775: Mitigation bypass in the DOM: HTML Parser component
    - CVE-2026-2776: Sandbox escape due to incorrect boundary conditions in the       Telemetry component in External Software
    - CVE-2026-2777: Privilege escalation in the Messaging System component
    - CVE-2026-2778: Sandbox escape due to incorrect boundary conditions in the       DOM: Core & HTML component
    - CVE-2026-2779: Incorrect boundary conditions in the Networking: JAR component
    - CVE-2026-2780: Privilege escalation in the Netmonitor component
    - CVE-2026-2781: Integer overflow in the Libraries component in NSS
    - CVE-2026-2782: Privilege escalation in the Netmonitor component
    - CVE-2026-2783: Information disclosure due to JIT miscompilation in the       JavaScript Engine: JIT component
    - CVE-2026-2784: Mitigation bypass in the DOM: Security component
    - CVE-2026-2785: Invalid pointer in the JavaScript Engine component
    - CVE-2026-2786: Use-after-free in the JavaScript Engine component
    - CVE-2026-2787: Use-after-free in the DOM: Window and Location component
    - CVE-2026-2788: Incorrect boundary conditions in the Audio/Video: GMP       component
    - CVE-2026-2789: Use-after-free in the Graphics: ImageLib component
    - CVE-2026-2790: Same-origin policy bypass in the Networking: JAR component
    - CVE-2026-2791: Mitigation bypass in the Networking: Cache component
    - CVE-2026-2792: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR       140.8, Firefox 148 and Thunderbird 148
    - CVE-2026-2793: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR       140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20365-1 advisory.

    - Firefox Extended Support Release 140.8.0 ESR (bsc#1258568)
    - CVE-2026-2757: Incorrect boundary conditions in the WebRTC: Audio/Video component
    - CVE-2026-2758: Use-after-free in the JavaScript: GC component
    - CVE-2026-2759: Incorrect boundary conditions in the Graphics: ImageLib component
    - CVE-2026-2760: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component
    - CVE-2026-2761: Sandbox escape in the Graphics: WebRender component
    - CVE-2026-2762: Integer overflow in the JavaScript: Standard Library component
    - CVE-2026-2763: Use-after-free in the JavaScript Engine component
    - CVE-2026-2764: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component
    - CVE-2026-2765: Use-after-free in the JavaScript Engine component
    - CVE-2026-2766: Use-after-free in the JavaScript Engine: JIT component
    - CVE-2026-2767: Use-after-free in the JavaScript: WebAssembly component
    - CVE-2026-2768: Sandbox escape in the Storage: IndexedDB component
    - CVE-2026-2769: Use-after-free in the Storage: IndexedDB component
    - CVE-2026-2770: Use-after-free in the DOM: Bindings (WebIDL) component
    - CVE-2026-2771: Undefined behavior in the DOM: Core HTML component
    - CVE-2026-2772: Use-after-free in the Audio/Video: Playback component
    - CVE-2026-2773: Incorrect boundary conditions in the Web Audio component
    - CVE-2026-2774: Integer overflow in the Audio/Video component
    - CVE-2026-2775: Mitigation bypass in the DOM: HTML Parser component
    - CVE-2026-2776: Sandbox escape due to incorrect boundary conditions in the Telemetry component in     External Software
    - CVE-2026-2777: Privilege escalation in the Messaging System component
    - CVE-2026-2778: Sandbox escape due to incorrect boundary conditions in the DOM: Core HTML component
    - CVE-2026-2779: Incorrect boundary conditions in the Networking: JAR component
    - CVE-2026-2780: Privilege escalation in the Netmonitor component
    - CVE-2026-2781: Integer overflow in the Libraries component in NSS
    - CVE-2026-2782: Privilege escalation in the Netmonitor component
    - CVE-2026-2783: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component
    - CVE-2026-2784: Mitigation bypass in the DOM: Security component
    - CVE-2026-2785: Invalid pointer in the JavaScript Engine component
    - CVE-2026-2786: Use-after-free in the JavaScript Engine component
    - CVE-2026-2787: Use-after-free in the DOM: Window and Location component
    - CVE-2026-2788: Incorrect boundary conditions in the Audio/Video: GMP component
    - CVE-2026-2789: Use-after-free in the Graphics: ImageLib component
    - CVE-2026-2790: Same-origin policy bypass in the Networking: JAR component
    - CVE-2026-2791: Mitigation bypass in the Networking: Cache component
    - CVE-2026-2792: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and     Thunderbird 148
    - CVE-2026-2793: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8,     Firefox 148 and Thunderbird 148

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:3516 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    Security Fix(es):

    * libvpx: Heap buffer overflow in libvpx (CVE-2026-2447)

    * firefox: Invalid pointer in the JavaScript Engine component (CVE-2026-2785)

    * firefox: Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8,     Firefox 148 and Thunderbird 148 (CVE-2026-2793)

    * firefox: Undefined behavior in the DOM: Core & HTML component (CVE-2026-2771)

    * firefox: Integer overflow in the Audio/Video component (CVE-2026-2774)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External     Software (CVE-2026-2776)

    * firefox: Integer overflow in the Libraries component in NSS (CVE-2026-2781)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-2766)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-2769)

    * firefox: Use-after-free in the DOM: Window and Location component (CVE-2026-2787)

    * firefox: Sandbox escape in the Storage: IndexedDB component (CVE-2026-2768)

    * firefox: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component     (CVE-2026-2783)

    * firefox: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-2788)

    * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-2784)

    * firefox: Incorrect boundary conditions in the Graphics: ImageLib component (CVE-2026-2759)

    * firefox: Integer overflow in the JavaScript: Standard Library component (CVE-2026-2762)

    * firefox: Sandbox escape in the Graphics: WebRender component (CVE-2026-2761)

    * firefox: Privilege escalation in the Messaging System component (CVE-2026-2777)

    * firefox: Same-origin policy bypass in the Networking: JAR component (CVE-2026-2790)

    * firefox: Mitigation bypass in the DOM: HTML Parser component (CVE-2026-2775)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2763)

    * firefox: Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and     Thunderbird 148 (CVE-2026-2792)

    * firefox: Incorrect boundary conditions in the Web Audio component (CVE-2026-2773)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2786)

    * firefox: Use-after-free in the Graphics: ImageLib component (CVE-2026-2789)

    * firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Audio/Video component (CVE-2026-2757)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component     (CVE-2026-2760)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-2772)

    * firefox: Incorrect boundary conditions in the Networking: JAR component (CVE-2026-2779)

    * firefox: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-2767)

    * firefox: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component (CVE-2026-2764)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2782)

    * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-2765)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2026-2780)

    * firefox: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component     (CVE-2026-2778)

    * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-2758)

    * firefox: Mitigation bypass in the Networking: Cache component (CVE-2026-2791)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-2770)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名稱	產品	系列	已發布	已更新	嚴重性
301486	RHEL 8 : thunderbird (RHSA-2026:3979)	Nessus	Red Hat Local Security Checks	2026/3/9	2026/3/9	critical
301517	RHEL 9 : thunderbird (RHSA-2026:3983)	Nessus	Red Hat Local Security Checks	2026/3/9	2026/3/9	critical
301519	RHEL 7 : firefox (RHSA-2026:3984)	Nessus	Red Hat Local Security Checks	2026/3/9	2026/3/9	critical
301690	RHEL 9 : firefox (RHSA-2026:4152)	Nessus	Red Hat Local Security Checks	2026/3/10	2026/3/10	critical
302081	TencentOS Server 4: firefox (TSSA-2026:0166)	Nessus	Tencent Local Security Checks	2026/3/13	2026/3/13	critical
302103	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : MozillaThunderbird (SUSE-SU-2026:0880-1)	Nessus	SuSE Local Security Checks	2026/3/13	2026/3/13	critical
303003	openSUSE 16 Security Update : MozillaFirefox (openSUSE-SU-2026:20365-1)	Nessus	SuSE Local Security Checks	2026/3/19	2026/3/19	critical
303442	RHEL 9 : thunderbird (RHSA-2026:3516)	Nessus	Red Hat Local Security Checks	2026/3/24	2026/3/24	critical

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