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Ubuntu Security NoticesUSN-9089-1

USN-9089-1: x11vnc vulnerability

Severity not listed 0 CVEs Published Nov 12, 2026 at 8:55 PM UTC

Summary

It was discovered that x11vnc created shared memory segments with insecure permissions. A local attacker could possibly use this issue to obtain sensitive information or modify screen contents.

Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 0

No CVE identifiers were listed in the collected bulletin.

Updates

  1. Published by Ubuntu

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.