CVE-2026-34352 is a critical vulnerability affecting TigerVNC versions prior to 1.16.2, specifically within the Image.cxx component of x0vncserver. This flaw, caused by incorrect permissions, allows unauthorized users to observe or manipulate screen contents, or trigger an application crash. Rated with a CVSS score of 9.8 (Critical), it is remotely exploitable with low complexity, requiring no privileges or user interaction, and can lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No) and no public exploit code available, the vulnerability has garnered some community discussion and limited media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0, < 1.16.2CPE match | cpe:2.3:a:tigervnc:tigervnc:*:*:*:*:*:*:*:* | ||
< 1.16.2CPE matchmatch criteria | cpe:2.3:a:tigervnc:tigervnc:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.