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CVE-2011-2005· NVD / CVE Program· CNA microsoft

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

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."

HighCVSS 7.8 · v3.1KEVWeaponized No fix recorded
Published
Oct 11, 2011
Updated
Jun 16, 2026
EPSS
31.5% · 98th percentile
CWE
—
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Action score

70

This week

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CVSS
31 / 40 · 7.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
9 / 30 · 31.5%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Mar 28, 2022. That signals real attacks, not theory.

Remediation deadline for government agencies: Apr 18, 2022.

Affected systems

VendorProduct
microsoftwindows server 2003
microsoftwindows xp

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft windows server 2003all versions

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2011-3400Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 do not properly handle OLE objects in memory, which allows remote attackers to execute
    58Plan
  • CVE-2010-3970Stack-based buffer overflow in the CreateSizedDIBSECTION function in shimgvw.dll in the Windows Shell graphics processor (aka graphics rende
    57Plan
  • CVE-2015-0015Microsoft Windows Server 2003 SP2, Server 2008 SP2 and R2 SP1, and Server 2012 Gold and R2 allow remote attackers to cause a denial of servi
    55Plan
  • CVE-2011-1248WINS in Microsoft Windows Server 2003 SP2 and Server 2008 Gold, SP2, R2, and R2 SP1 does not properly handle socket send exceptions, which a
    51Plan
  • CVE-2013-0810Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, and Windows Server 2008 SP2 allow remote attackers to execute
    50Plan
  • CVE-2017-8487Windows OLE in Windows XP and Windows Server 2003 allows an attacker to execute code when a victim opens a specially crafted file or program
    47Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrylocal2012-10-10
Exploit-DB entrylocal2011-11-30
Metasploit moduleexploit/windows/local/ms11_080_afdjoinleafMS11-080 AfdJoinLeaf Privilege Escalationexploit2011-11-30

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+49 d
  3. Metasploit+49 d
  4. CISA KEV+3820 d
  5. TodaySep 30, 2026+5468 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records