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Findings

CVE-2011-2005

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

Published Oct 11, 2011 · updated Jun 16, 2026 · microsoft windows server 2003

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."

Timeline

Detection, updates, and resolution for this record.

  1. Oct 11, 2011 · Catalog

    Detected

    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."

  2. Mar 28, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 18, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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."

Required action

Apply updates per vendor instructions.

CISA due date Apr 18, 2022

Affected

  • cpe microsoft/windows server 2003version unspecified
  • cpe microsoft/windows xpversion unspecified
  • vendor Microsoft Ancillary Function Driver (afd.sys)version unspecified

Sources

  • CISA KEVCVE-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.gov
  • CVE.orgCVE-2011-2005

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2011-2005

    30-day exploitation probability 31.8%

    first.org
  • Exploit Database18176

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit Database21844

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit Modulesexploit_windows/local/ms11_080_afdjoinleaf

    Public module reference (average). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-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 Pr

    nvd.nist.gov

References