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TigerVNC x0vncserver Incorrect Permissions Vulnerability Allowing Screen Manipulation and Crashes

Vulnerability

A vulnerability in TigerVNC versions prior to 1.16.2 in the x0vncserver component has been identified, allowing users to improperly observe or alter screen contents, or potentially crash an application. This issue stems from incorrect permission settings.

Impact

Exploitation of this vulnerability could lead to unauthorized observation or manipulation of screen contents in x0vncserver, and could also cause the application to crash.

Remediation

Users are advised to update to TigerVNC version 1.16.2, available on SourceForge.

Added: Mar 26, 2026, 11:20 PM
Updated: Mar 26, 2026, 11:20 PM

Vulnerability Rating

Custom Algorithm
spread
4.5
impact
3.8
exploitability
3.7
remediation
7.7
relevance
4.7
threat
3.2
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.