CVE-2011-2005

afd.sys in the Ancillary Function Driver in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2...

7.8 HighIn KEVPublic exploit

CVE-2011-2005 is a high vulnerability (CVSS 7.8) in Microsoft Windows Xp, published October 12, 2011. CISA lists it as known to be exploited, since March 28, 2022. EUVD reports exploitation since March 28, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 31.8%, the 98th percentile. No source names a fixed version.

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."

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

31.8%Up 28.2 points since Feb 4, 2022

What each source reports

NVD Score used 7.8

Record: CVE-2011-2005
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Updated: 2026-11-02

CVE List 7.8

Record: CVE-2011-2005
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

EUVDEUVD-2011-1999 7.8

Record: EUVD-2011-1999
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-8q8w-v8pg-496j 7.8

afd.sys in the Ancillary Function Driver in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2...

Record: GHSA-8q8w-v8pg-496j
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

CISA KEV No score

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

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.

Record: CVE-2011-2005
Weakness: CWE-264
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Microsoft Windows XP/2003 - 'afd.sys' Local Privilege Escalation (MS11-080)	2011-11-30
Metasploit	MS11-080 AfdJoinLeaf Privilege Escalation	2011-11-30
Exploit-DB	Microsoft Windows - 'AfdJoinLeaf' Local Privilege Escalation (MS11-080) (Metasploit)	2012-10-10

History

History
When	Changed	Sources
2026-11-03	exploitation, exploits
2026-11-02	created	CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, Metasploit, NVD