CVE-2011-2005

microsoft windows server 2003, microsoft windows xp

Published 12 Oct 2011 · updated 16 Jun 2026 · Analyzed

7.8 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 28 Mar 2022, with a remediation deadline of 18 Apr 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

afd.sys in the Ancillary Function Driver in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly validate user-mode input passed to kernel mode, which allows local users to gain privileges via a crafted application, aka "Ancillary Function Driver Elevation of Privilege Vulnerability."

References

docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080 · Patch, Vendor Advisory
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114 · Broken Link
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005 · US Government Resource