CVE-2026-34352

tigervnc: Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment...

CVE-2026-34352 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-34352, released March 26, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
9.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0025
16th percentile

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) * 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 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.

Where it's fixed

ProductFixed inFixReleased
Linux
tigervnc · Debian 13.5 (trixie) 1.15.0+dfsg-2.1~deb13u1 DEBIAN-CVE-2026-34352 Mar 26, 2026
tigervnc · Debian 14 1.15.0+dfsg-2.1 DEBIAN-CVE-2026-34352 Mar 26, 2026
tigervnc · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc · opensuse-leap 15.6 1.13.1-150600.4.3.1 SUSE-SU-2026:1252-1 Apr 10, 2026
tigervnc · opensuse-leap 16.0 1.15.0-160000.3.1 OPENSUSE-SU-2026:20465-1 Apr 7, 2026
tigervnc · rocky 8 0:1.15.0-9.el8_10 RLSA-2026:13414 May 7, 2026
tigervnc · rocky 9 0:1.15.0-7.el9_8.1 RLSA-2026:19342 May 28, 2026
tigervnc · sles 15.6 1.13.1-150600.4.3.1 SUSE-SU-2026:1252-1 Apr 10, 2026
tigervnc · sles 15.7 1.14.1-150700.4.3.1 SUSE-SU-2026:1360-1 Apr 15, 2026
tigervnc · sles 16.0 1.15.0-160000.3.1 SUSE-SU-2026:21140-1 Apr 7, 2026
tigervnc-debuginfo · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-debugsource · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-icons · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc-icons · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc-icons · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc-icons · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc-icons · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-icons · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc-icons · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc-license · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc-license · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc-license · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc-license · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc-license · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-license · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc-license · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc-selinux · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc-selinux · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc-selinux · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc-selinux · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc-selinux · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-selinux · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc-selinux · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc-server · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc-server · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc-server · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc-server · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc-server · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-server · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc-server · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc-server-debuginfo · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-server-minimal · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc-server-minimal · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc-server-minimal · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc-server-minimal · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc-server-minimal · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-server-minimal · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc-server-minimal · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc-server-minimal-debuginfo · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-server-module · RHEL 8 0:1.15.0-9.el8_10 RHSA-2026:13414 May 15, 2026
tigervnc-server-module · RHEL 9 0:1.15.0-7.el9_8.1 RHSA-2026:19342 Apr 30, 2026
tigervnc-server-module · almalinux 8 1.15.0-9.el8_10 ALSA-2026:13414 May 4, 2026
tigervnc-server-module · almalinux 9 1.15.0-7.el9_8.1 ALSA-2026:19342 May 19, 2026
tigervnc-server-module · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026
tigervnc-server-module · ol 8 0:1.15.0-9.el8_10 ELSA-2026-13414 May 5, 2026
tigervnc-server-module · ol 9 0:1.15.0-6.el9_7.1 ELSA-2026-10739 Apr 27, 2026
tigervnc-server-module-debuginfo · amzn 2023 1.14.1-3.amzn2023.0.4 ALAS2023-2026-1537 Apr 13, 2026

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