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CVE-2011-2005

7.8 · HIGHActively Exploited

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 p…

Published Oct 12, 2011microsoftEPSS 31.76%

Overview

CVE-2011-2005 is a high-severity vulnerability affecting microsoft windows_server_2003. It was published on October 12, 2011 and has a CVSS 3.1 base score of 7.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_server_2003 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114CISAwww.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2005?

CVE-2011-2005 is a high-severity vulnerability affecting microsoft windows_server_2003. It was published on October 12, 2011 and has a CVSS 3.1 base score of 7.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2011-2005?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-2005?

Check the references section for vendor advisories and patches from microsoft. Update windows_server_2003 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-2005?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2005 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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