The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:54180 advisory.

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

    Security Fix(es):

    * libaom: libaom: heap buffer overflow in AV1 encoder first-pass stats buffer via LAP mode     (CVE-2026-56208)

    * firefox: thunderbird: Site isolation issue in the DOM: Navigation component (CVE-2026-15719)

    * firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-15718)

    * firefox: thunderbird: Mitigation bypass in the Enterprise Policies component (CVE-2026-16390)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component (CVE-2026-16350)

    * firefox: thunderbird: Information disclosure in the Storage: IndexedDB component (CVE-2026-16391)

    * firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-16375)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component     (CVE-2026-16356)

    * firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-16363)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153 (CVE-2026-16412)

    * firefox: thunderbird: Same-origin policy bypass in the Networking: DNS component (CVE-2026-16381)

    * firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-16355)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13     (CVE-2026-16361)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component     (CVE-2026-16352)

    * firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component     (CVE-2026-16368)

    * firefox: thunderbird: Mitigation bypass in the PDF Viewer component (CVE-2026-16377)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153     (CVE-2026-16360)

    * firefox: thunderbird: Use-after-free in the WebRTC: Audio/Video component (CVE-2026-16362)

    * firefox: thunderbird: Site isolation issue in the Graphics: WebRender component (CVE-2026-16358)

    * firefox: thunderbird: Site isolation issue in the Networking component (CVE-2026-16387)

    * firefox: thunderbird: Same-origin policy bypass in the DOM: Navigation component (CVE-2026-16349)

    * firefox: thunderbird: Incorrect boundary conditions in the Graphics component (CVE-2026-16357)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the DOM: Navigation component     (CVE-2026-16351)

    * firefox: thunderbird: Privilege escalation in the DOM: Navigation component (CVE-2026-16371)

    * firefox: thunderbird: Privilege escalation in the DOM: Content Processes component (CVE-2026-16379)

    * firefox: thunderbird: Information disclosure in the Graphics: ImageLib component (CVE-2026-16354)

    * firefox: thunderbird: Information disclosure in the Framework component in DevTools (CVE-2026-16374)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-16359)

    * firefox: thunderbird: Mitigation bypass in the DOM: Networking component (CVE-2026-16383)

    * firefox: thunderbird: Integer overflow in the JavaScript: WebAssembly component (CVE-2026-16369)

    * firefox: thunderbird: Invalid pointer in the DOM: Bindings (WebIDL) component (CVE-2026-16353)

    * firefox: thunderbird: Privilege escalation in WebExtensions (CVE-2026-16396)

    * firefox: thunderbird: Information disclosure in the Networking: WebSockets component (CVE-2026-16405)

    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 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:54259 advisory.

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

    Security Fix(es):

    * libaom: libaom: heap buffer overflow in AV1 encoder first-pass stats buffer via LAP mode     (CVE-2026-56208)

    * firefox: thunderbird: Site isolation issue in the DOM: Navigation component (CVE-2026-15719)

    * firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-15718)

    * firefox: thunderbird: Mitigation bypass in the Enterprise Policies component (CVE-2026-16390)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component (CVE-2026-16350)

    * firefox: thunderbird: Information disclosure in the Storage: IndexedDB component (CVE-2026-16391)

    * firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-16375)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component     (CVE-2026-16356)

    * firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-16363)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153 (CVE-2026-16412)

    * firefox: thunderbird: Same-origin policy bypass in the Networking: DNS component (CVE-2026-16381)

    * firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-16355)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13     (CVE-2026-16361)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component     (CVE-2026-16352)

    * firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component     (CVE-2026-16368)

    * firefox: thunderbird: Mitigation bypass in the PDF Viewer component (CVE-2026-16377)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153     (CVE-2026-16360)

    * firefox: thunderbird: Use-after-free in the WebRTC: Audio/Video component (CVE-2026-16362)

    * firefox: thunderbird: Site isolation issue in the Graphics: WebRender component (CVE-2026-16358)

    * firefox: thunderbird: Site isolation issue in the Networking component (CVE-2026-16387)

    * firefox: thunderbird: Same-origin policy bypass in the DOM: Navigation component (CVE-2026-16349)

    * firefox: thunderbird: Incorrect boundary conditions in the Graphics component (CVE-2026-16357)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the DOM: Navigation component     (CVE-2026-16351)

    * firefox: thunderbird: Privilege escalation in the DOM: Navigation component (CVE-2026-16371)

    * firefox: thunderbird: Privilege escalation in the DOM: Content Processes component (CVE-2026-16379)

    * firefox: thunderbird: Information disclosure in the Graphics: ImageLib component (CVE-2026-16354)

    * firefox: thunderbird: Information disclosure in the Framework component in DevTools (CVE-2026-16374)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-16359)

    * firefox: thunderbird: Mitigation bypass in the DOM: Networking component (CVE-2026-16383)

    * firefox: thunderbird: Integer overflow in the JavaScript: WebAssembly component (CVE-2026-16369)

    * firefox: thunderbird: Invalid pointer in the DOM: Bindings (WebIDL) component (CVE-2026-16353)

    * firefox: thunderbird: Privilege escalation in WebExtensions (CVE-2026-16396)

    * firefox: thunderbird: Information disclosure in the Networking: WebSockets component (CVE-2026-16405)

    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-2026:54248 advisory.

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

    Security Fix(es):

    * libaom: libaom: heap buffer overflow in AV1 encoder first-pass stats buffer via LAP mode     (CVE-2026-56208)

    * firefox: thunderbird: Site isolation issue in the DOM: Navigation component (CVE-2026-15719)

    * firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-15718)

    * firefox: thunderbird: Mitigation bypass in the Enterprise Policies component (CVE-2026-16390)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component (CVE-2026-16350)

    * firefox: thunderbird: Information disclosure in the Storage: IndexedDB component (CVE-2026-16391)

    * firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-16375)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component     (CVE-2026-16356)

    * firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-16363)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153 (CVE-2026-16412)

    * firefox: thunderbird: Same-origin policy bypass in the Networking: DNS component (CVE-2026-16381)

    * firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-16355)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13     (CVE-2026-16361)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component     (CVE-2026-16352)

    * firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component     (CVE-2026-16368)

    * firefox: thunderbird: Mitigation bypass in the PDF Viewer component (CVE-2026-16377)

    * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153     (CVE-2026-16360)

    * firefox: thunderbird: Use-after-free in the WebRTC: Audio/Video component (CVE-2026-16362)

    * firefox: thunderbird: Site isolation issue in the Graphics: WebRender component (CVE-2026-16358)

    * firefox: thunderbird: Site isolation issue in the Networking component (CVE-2026-16387)

    * firefox: thunderbird: Same-origin policy bypass in the DOM: Navigation component (CVE-2026-16349)

    * firefox: thunderbird: Incorrect boundary conditions in the Graphics component (CVE-2026-16357)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the DOM: Navigation component     (CVE-2026-16351)

    * firefox: thunderbird: Privilege escalation in the DOM: Navigation component (CVE-2026-16371)

    * firefox: thunderbird: Privilege escalation in the DOM: Content Processes component (CVE-2026-16379)

    * firefox: thunderbird: Information disclosure in the Graphics: ImageLib component (CVE-2026-16354)

    * firefox: thunderbird: Information disclosure in the Framework component in DevTools (CVE-2026-16374)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: GMP component (CVE-2026-16359)

    * firefox: thunderbird: Mitigation bypass in the DOM: Networking component (CVE-2026-16383)

    * firefox: thunderbird: Integer overflow in the JavaScript: WebAssembly component (CVE-2026-16369)

    * firefox: thunderbird: Invalid pointer in the DOM: Bindings (WebIDL) component (CVE-2026-16353)

    * firefox: thunderbird: Privilege escalation in WebExtensions (CVE-2026-16396)

    * firefox: thunderbird: Information disclosure in the Networking: WebSockets component (CVE-2026-16405)

    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 Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-7d71f89d7e advisory.

    - Update to latest upstream (153.0)

    ----

    - New upstream release (153.0)

    ----

    - Updated to latest upstream (153.0)

Tenable has extracted the preceding description block directly from the Fedora 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 AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1785839724 advisory.

  - The code to parse MIME headers for display when forwarding a message (if the setting to view all headers     was enabled) had an off-by-one error, allowing a single byte to be read from the memory after the buffer     for the headers, and potentially crashing Thunderbird. This vulnerability was fixed in Thunderbird 153 and     Thunderbird 140.13. (CVE-2026-14899)

  - We are aware that exploit code for this is public however we are not aware of any attacks in the wild     abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird     140.13. (CVE-2026-15718)

  - We are aware that exploit code for this is public however we are not aware of any attacks in the wild     abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR     140.13, and Thunderbird 140.13. (CVE-2026-15719)

  - Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153,     Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. (CVE-2026-16349)

  - Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox     153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. (CVE-2026-16350)

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
334847	RHEL 8 : firefox (RHSA-2026:54180)	Nessus	Red Hat Local Security Checks	2026/8/12	2026/8/12	critical
334958	RHEL 8 : firefox (RHSA-2026:54259)	Nessus	Red Hat Local Security Checks	2026/8/12	2026/8/12	critical
334960	RHEL 7 : firefox (RHSA-2026:54248)	Nessus	Red Hat Local Security Checks	2026/8/12	2026/8/12	critical
329269	Fedora 44 : firefox (2026-7d71f89d7e)	Nessus	Fedora Local Security Checks	2026/7/23	2026/8/28	critical
348282	SUSE SLED15: MozillaThunderbird / MozillaThunderbird-translations-common / etc (SUSE-SU-2026:4268-1)	Nessus	SuSE Local Security Checks	2026/9/19	2026/9/19	critical
352382	AlmaLinux 9.2 [TuxCare] Security Update: thunderbird Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1785839724)	Nessus	Alma Linux Local Security Checks	2026/9/30	2026/9/30	critical

偵測

搜尋 Plugin

critical

critical

critical

critical

critical

critical