CVE-2009-1922: Microsoft Windows 2000

Medium severity, CVSS 6.9. EPSS: 1.3% chance of exploitation in the next 30 days.

The Message Queuing (aka MSMQ) service for Microsoft Windows 2000 SP4, XP SP2, Server 2003 SP2, and Vista Gold does not properly validate unspecified IOCTL request data from user mode before passing this data to kernel mode, which allows local users to gain privileges via a crafted request, aka "MSMQ Null Pointer Vulnerability."

Affected products

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

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