What’s Vulnerable › Vulnerabilities

CVE-2006-2206

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2006-05-05 · updated 2026-06-16

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.

Affected products

• Ultravnc: 1.0.1

References

• http://archives.neohapsis.com/archives/bugtraq/2006-05/0057.html
• http://www.securityfocus.com/bid/17824
• https://exchange.xforce.ibmcloud.com/vulnerabilities/26283
• http://archives.neohapsis.com/archives/bugtraq/2006-05/0057.html
• http://www.securityfocus.com/bid/17824
• https://exchange.xforce.ibmcloud.com/vulnerabilities/26283

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