CVE-2019-8267: Uvnc Ultravnc

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

UltraVNC revision 1207 has out-of-bounds read vulnerability in VNC client code inside TextChat module, which results in a denial of service (DoS) condition. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1208.

Affected products

• Uvnc Ultravnc: before 1.2.2.3 (fixed in 1.2.2.3)

Published 2019-03-08. Last modified 2026-06-17.