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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd4…
cve@mitre.org
https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLI
cve@mitre.org
https://sourceforge.net/projects/tigervnc/files/stable/1.16.2
cve@mitre.org
https://www.openwall.com/lists/oss-security/2026/03/26/7
cve@mitre.org