CVEvulnerability

CVE-2011-2005

7.8 HIGH Known exploited Published 2011-10-12 Modified 2026-06-16 Official page ↗

CISA Known Exploited Vulnerability

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

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.

Added to KEV
2022-03-28
Remediation due
2022-04-18
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2011-2005
Status
Analyzed
Published
2011-10-12
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C

Description

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."

Affected configurations

• microsoft windows server 2003 • microsoft windows xp

References