CVE-2026-34352 - Vulnerability Analysis

Overview

TigerVNC < 1.16.2 contains a broken access control caused by incorrect permissions in Image.cxx in x0vncserver, letting other users observe or manipulate screen contents or cause application crash, exploit requires local user access.

Severity & Score

Impact

Other users can view or manipulate screen contents or crash the application, risking data exposure or denial of service.

Mitigation

Upgrade to version 1.16.2 or later.

References

• https://sourceforge.net/projects/tigervnc/files/stable/1.16.2
• https://www.openwall.com/lists/oss-security/2026/03/26/7
• https://github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd484393
• https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLI

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner