Is CVE-2011-2005 in the CISA KEV catalog?

Yes. CVE-2011-2005 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-28.

What is the CVSS severity of CVE-2011-2005?

CVE-2011-2005 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2011-2005?

CVE-2011-2005 has an EPSS score of 31.76% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-2005

HIGHCISA KEVEPSS 98th pctl

7.8

CVSS v3

NVD

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 v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

31.76%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

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.

Apply updates per vendor instructions.

Remediation due: 2022-04-18

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.