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Case File

CVE-2019-8258

CRITICAL · CVSS 9.8 EPSS 4.43% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-03-05 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2019-8258
Severity
CRITICAL
CVSS
9.8
EPSS
4.43%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)