UltraVNC
Security Risk Profile
Security Risk Score
Comprehensive risk assessment based on 22 vulnerabilities, EPSS scores, exploitation status, and remediation availability.
📅 Data spans from April 6, 2006 to present
Threat Assessment
Severity Distribution
Exploit Likelihood
Age Distribution
Common Weaknesses (CWE)
Most Affected Products
Recent Vulnerabilities
See more →UltraVNC repeater HTTP server global buffer overflow via long URI (pre-auth RCE)
UltraVNC repeater ships hardcoded default admin password allowing unauthenticated admin access
UltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason length
UltraVNC repeater authenticated out-of-bounds write in rule parser via oversized token
UltraVNC repeater integer overflow in win_log malloc leading to heap overflow
UltraVNC vncauth.c uses time-seeded libc rand() to generate VNC authentication challenge bytes
UltraVNC vncWc2Mb calls wcslen() before validating that the wide string is NUL-terminated
UltraVNC repeater wi_uudecode off-by-one in base64 decode boundary check
UltraVNC Service version.dll uncontrolled search path
UltraVNC Launcher 1.2.2.4 Denial of Service Buffer Overflow
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