netVigilance Vulnerability intelligence since 2004
CVE-2011-2005 · netVigilance record NV22-0261

Microsoft Ancillary Function Driver (afd.sys) Improper Input Validation

past due

What to do

Apply updates per vendor instructions.

CISA deadline 2022-04-18 · passed 4 years 4 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

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.

Who is affected

Microsoft Ancillary Function Driver (afd.sys). Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-264.

Timeline

  1. Added to CISA KEVExploitation in the wild confirmed by CISA
  2. CISA remediation deadlinepassed 4 years 4 months ago

Sources