CVE-2009-1930: Microsoft Windows 2000

High severity, CVSS 10.0. EPSS: 41.4% chance of exploitation in the next 30 days.

The Telnet service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote Telnet servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, aka "Telnet Credential Reflection Vulnerability," a related issue to CVE-2000-0834.

Affected products

• Microsoft Windows 2000: affected versions not specified
• Microsoft Windows 2003 Server: version sp2 only
• Microsoft Windows Server 2008: any version; affected versions not specified
• Microsoft Windows Vista: any version; affected versions not specified
• Microsoft Windows XP: any version; affected versions not specified

Published 2009-08-12. Last modified 2026-06-16.