VULNERABILITY INTELLIGENCE

CVE-2019-8258

CVSS score9.8 CRITICAL
EPSS probability4.43%
CISA KEVNot currently listed
Published2019-03-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.

Weakness classification

  • CWE-122: Heap-based Buffer Overflow
  • CWE-787: Out-of-bounds Write

Primary references