Microsoft Ancillary Function Driver (afd.sys) Improper Input Validation Vulnerability (CVE-2011-2005)
Severity: high · Patch status: patched · Since 2022-03-28 · CVE-2011-2005
afd.sys in the Ancillary Function Driver in Microsoft Windows does not properly validate user-mode input passed to kernel mode, which allows local users to gain privileges via a crafted application. CISA added CVE-2011-2005 to its Known Exploited Vulnerabilities catalog on Mar 28, 2022, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Apr 18, 2022 (BOD 22-01); treat that as the outer limit.
Sources
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