CVE-2011-2005

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."

Score

CVSS 3.1 7.8 High

Status

Analyzed - secure@microsoft.com

Published

2011-10-12

Last modified

2025-10-22

Known exploited (CISA KEV)

since 2022-03-28, action due 2022-04-18: Apply updates per vendor instructions.

Affected products

• Windows Server 2003 (Microsoft)
• Windows Xp (Microsoft)

References

• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005