CVE-2026-34352

Name	CVE-2026-34352
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1132166

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
tigervnc (PTS)	bullseye	1.11.0+dfsg-2+deb11u1	vulnerable
	bookworm	1.12.0+dfsg-8	vulnerable
	forky, sid, trixie	1.15.0+dfsg-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
tigervnc	source	(unstable)	(unfixed)			1132166

Notes

https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLI
https://www.openwall.com/lists/oss-security/2026/03/26/7
Fixed by: https://github.com/TigerVNC/tigervnc/commit/a3fbb54278ebe91bf573f44b32d64e78a33a4828 (v1.16.2)