CVE-2019-15690: Libvnc Libvncserver

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shapes with specially crafted dimensions, which can result in remote code execution.

Affected products

• Libvnc Libvncserver: up to and including 0.9.12

Published 2025-01-24. Last modified 2026-06-17.