CVE-2006-2206

CriticalCVSS 10.0/10Last modified Jun 16, 2026

Description

The MS-Logon authentication scheme in UltraVNC (aka Ultr@VNC) 1.0.1 uses weak encryption (XOR) for challenge/response, which allows remote attackers to gain privileges by sniffing and decrypting passwords.

Metrics

CVSS 2.0 10.0/10AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected software

No affected versions have been published.

Timeline

Published
May 5, 2006
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2006-2206: Critical severity, CVSS 10.0 | Vulnix