High severity · published Oct 12, 2011
CVE-2011-2005
Microsoft Ancillary Function Driver (afd.sys) Improper Input Validation Vulnerability
In wildKEV
7.8
CVSS
31.8%
EPSS
Yes
On KEV
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."
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)31.8% · higher than 98% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 28, 2022
Federal remediation dueApr 18, 2022
Ransomware campaign useNot known
Affected products
Which versions
WS
Windows Server 2003 · Microsoft
All versions, or not specified · source: NVD
WX
Windows XP · Microsoft
All versions, or not specified · source: NVD
AF
Ancillary Function Driver (afd.sys) · Microsoft
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-2005
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-2005
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vdb-entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114
vendor-advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080
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