Vulnerability in Tigervnc
CVE-2026-34352
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (33.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Tigervnc — versions 0
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2026/03/26/7 (Mailing List, Third Party Advisory)
- github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd484393 (Patch)
- sourceforge.net/projects/tigervnc/files/stable/1.16.2 (Release Notes)
- groups.google.com/g/tigervnc-announce/c/anHL9WLshLI (Patch, Mailing List)
- github.com/TigerVNC/tigervnc/issues/2079
Frequently asked questions
- What is CVE-2026-34352?
- CVE-2026-34352 is a high-severity vulnerability in Tigervnc, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.5/10. Published 2026-03-26.
- How severe is CVE-2026-34352?
- High severity. CVSS v3 base score is 8.5 out of 10.