CVE-2011-2005: Microsoft Ancillary Function Driver (afd.sys) Improper Input Validation Vulnerability

CVE-2011-2005 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-03-28

The Ancillary Function Driver (afd.sys) in Microsoft Windows fails to properly validate user-mode input passed to kernel mode. This flaw allows a local attacker to gain elevated privileges by executing a specially crafted application.

Vendors: Microsoft.

Quick answers

Is CVE-2011-2005 exploited in the wild?
Yes. CVE-2011-2005 is known to be exploited in the wild, first recorded on 28 March 2022. Treat it as urgent.
How severe is CVE-2011-2005?
Critical severity, with a CVSS score of 7.8, published 28 March 2022.
Which products and versions are affected?
Microsoft Windows XP SP2, SP3; Microsoft Windows Server 2003 SP2.
Is there a fix for CVE-2011-2005?
A patch was published on 2011-10-11: Microsoft released security bulletin MS11-080 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2011-2005 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2011-2005?
Check whether you run Microsoft Ancillary Function Driver (AFD.sys). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows XP SP2, SP3
  • Microsoft Windows Server 2003 SP2

Timeline

  • 2011-10-11: disclosed: NVD Published Date
  • 2011-10-11: patched: Microsoft released security bulletin MS11-080
  • 2022-03-28: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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