CVE-2011-0043: Microsoft Windows 2003 Server

High severity, CVSS 7.2. EPSS: 1.6% chance of exploitation in the next 30 days.

Kerberos in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 supports weak hashing algorithms, which allows local users to gain privileges by operating a service that sends crafted service tickets, as demonstrated by the CRC32 algorithm, aka "Kerberos Unkeyed Checksum Vulnerability."

Affected products

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

Published 2011-02-10. Last modified 2026-06-16.