CVE-2026-34352

Summary

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.

Affected Software

Weaknesses

• CWE-732: CWE-732 Incorrect Permission Assignment for Critical Resource

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/TigerVNC/tigervnc/issues/2079

References

• https://www.openwall.com/lists/oss-security/2026/03/26/7
• https://github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd484393
• https://sourceforge.net/projects/tigervnc/files/stable/1.16.2
• https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLI
• https://github.com/TigerVNC/tigervnc/issues/2079

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