CVE-2018-15361: Uvnc Ultravnc

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

UltraVNC revision 1198 has a buffer underflow vulnerability in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.

Affected products

• Uvnc Ultravnc: before 1.2.2.3 (fixed in 1.2.2.3)

Published 2019-03-05. Last modified 2026-06-17.