Home/CVE/In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or
CVE

CVE-2026-34352

In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or

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.

HIGH · CVSS 8.5 EPSS 0.00032
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-732Incorrect Permission Assignment for Critical Resource
▤

Affected Products & Versions

1
tigervnc< 1.16.2
▣

Scoring & Timeline

8.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Mar 2026 · 11:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

16
rhsaRHSA-2026:20576Moderate
rhsaRHSA-2026:20575Moderate
rhsaRHSA-2026:19342Moderate
rhsaRHSA-2026:22424Moderate
rhsaRHSA-2026:22456Moderate
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd484393Patch
https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLIMailing ListPatch
https://sourceforge.net/projects/tigervnc/files/stable/1.16.2Release Notes
https://www.openwall.com/lists/oss-security/2026/03/26/7Mailing ListThird Party Advisory
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