The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:20465-1 advisory.

    - CVE-2026-34352: Fixed permissions to prevent other users from observing the screen, or modifying what is     sent to the client. (bsc#1260871)

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1537 advisory.

    In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen     contents, or cause an application crash, because of incorrect permissions. (CVE-2026-34352)

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

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

The remote SUSE Linux SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:1301-1 advisory.

    - CVE-2026-34352: Fixed permissions to prevent other users from observing the screen, or modifying what is     sent to the client. (bsc#1260871)

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

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1303-1 advisory.

    - CVE-2026-34352: Fixed permissions to prevent other users from observing the screen, or modifying what is     sent to the client. (bsc#1260871)

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

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1360-1 advisory.

    - CVE-2026-34352: Fixed permissions to prevent other users from observing the screen, or modifying what is     sent to the client. (bsc#1260871)

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

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

According to the versions of the tigervnc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen     contents, or cause an application crash, because of incorrect permissions.(CVE-2026-34352)

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

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

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1779798274 advisory.

  - A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a     global variable. If a client frees the root cursor, the internal reference points to freed memory and     causes a use-after-free. (CVE-2025-26594)

  - A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-     sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to     check the bounds of the buffer and would copy the data regardless of the size. (CVE-2025-26595)

  - A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms()     differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.
    (CVE-2025-26596)

  - A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group,     it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is     later called with a non-zero value of groups, this will cause a buffer overflow because the key actions     are of the wrong size. (CVE-2025-26597)

  - An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for     the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match     was found. However, the code will return the last element of the list if no matching device ID is found,     which can lead to out-of-bounds memory access. (CVE-2025-26598)

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

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-10739 advisory.

    - Fix CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002,       CVE-2026-34003 xorg-x11-server: various XKB and XSYNC vulnerabilities       Resolves: RHEL-163212       Resolves: RHEL-163280       Resolves: RHEL-163266

Tenable has extracted the preceding description block directly from the Oracle 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 packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:22456 advisory.

    Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop     environment not only on the machine where it is running, but from anywhere on the Internet and from a wide     variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

    Security Fix(es):

    * xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map     handling (CVE-2026-33999)

    * xwayland: xorg: X.Org X server: Information disclosure and denial of service via out-of-bounds read in     XKB geometry processing. (CVE-2026-34000)

    * xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory     corruption (CVE-2026-34001)

    * xorg: xwayland: X.Org X server: Information disclosure or Denial of Service via out-of-bounds read in     XKB modifier map handling (CVE-2026-34002)

    * xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory     access (CVE-2026-34003)

    * TigerVNC: x0vncserver: TigerVNC x0vncserver: Information disclosure, data manipulation, and denial of     service via incorrect permissions (CVE-2026-34352)

    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
305835	openSUSE 16 Security Update : tigervnc (openSUSE-SU-2026:20465-1)	Nessus	SuSE Local Security Checks	2026/4/10	2026/4/10	critical
306204	Amazon Linux 2023 : tigervnc, tigervnc-icons, tigervnc-license (ALAS2023-2026-1537)	Nessus	Amazon Linux Local Security Checks	2026/4/13	2026/4/13	critical
306498	SUSE SLES12 Security Update : tigervnc (SUSE-SU-2026:1301-1)	Nessus	SuSE Local Security Checks	2026/4/15	2026/4/15	critical
306499	SUSE SLES15 Security Update : tigervnc (SUSE-SU-2026:1303-1)	Nessus	SuSE Local Security Checks	2026/4/15	2026/4/15	critical
306688	SUSE SLED15: libXvnc-devel / libXvnc1 / tigervnc / xorg-x11-Xvnc / etc (SUSE-SU-2026:1360-1)	Nessus	SuSE Local Security Checks	2026/4/16	2026/6/26	critical
319985	EulerOS 2.0 SP11 : tigervnc (EulerOS-SA-2026-2230)	Nessus	Huawei Local Security Checks	2026/6/9	2026/6/9	critical
320239	EulerOS 2.0 SP13 : tigervnc (EulerOS-SA-2026-2316)	Nessus	Huawei Local Security Checks	2026/6/10	2026/6/10	critical
326170	EulerOS 2.0 SP12 : tigervnc (EulerOS-SA-2026-2633)	Nessus	Huawei Local Security Checks	2026/7/10	2026/7/10	critical
326574	EulerOS 2.0 SP10 : tigervnc (EulerOS-SA-2026-2674)	Nessus	Huawei Local Security Checks	2026/7/14	2026/7/14	critical
359757	CentOS Linux 7 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-server / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1779798274)	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/1	critical
310546	Oracle Linux 9 : tigervnc (ELSA-2026-10739)	Nessus	Oracle Linux Local Security Checks	2026/4/27	2026/4/27	critical
319560	RHEL 7 : tigervnc (RHSA-2026:22456)	Nessus	Red Hat Local Security Checks	2026/6/6	2026/6/6	critical
319991	EulerOS 2.0 SP11 : tigervnc (EulerOS-SA-2026-2267)	Nessus	Huawei Local Security Checks	2026/6/9	2026/6/9	critical
323151	EulerOS 2.0 SP15 : tigervnc (EulerOS-SA-2026-2511)	Nessus	Huawei Local Security Checks	2026/6/27	2026/6/27	critical
326191	EulerOS 2.0 SP12 : tigervnc (EulerOS-SA-2026-2573)	Nessus	Huawei Local Security Checks	2026/7/10	2026/7/10	critical

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