CVE-2011-2005: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-30T14:55:50.203Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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."

• Context preserved from previous revision: 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." 1. Use only isolated environments and systems you own or are explicitly authorized to test.

Technical Details

• CVE: CVE-2011-2005
• KEV date added: Unknown
• KEV due date: Not specified
• NVD published: 2011-10-12
• NVD modified: 2025-10-22
• MITRE modified: 2025-10-22
• CVSS base score: 7.8
• CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• CVSS exploitability score: 1.8
• CVSS impact score: 5.9
• Attack vector: Local
• Attack complexity: Low
• Privileges required: None
• User interaction: Required
• Scope: Unchanged
• Confidentiality impact: High
• Integrity impact: High
• Availability impact: High

Versions and Products Impacted

• microsoft / windows server 2003
• microsoft / windows xp
• n/a / n/a (versions: n/a)

Weakness Classification

• NVD-CWE-noinfo
• CWE-noinfo Not enough information

Repositories for Lab Validation (Public Examples)

• nomi-sec/PoC-in-GitHub | stars: 7606 | updated: 2026-03-30 | https://github.com/nomi-sec/PoC-in-GitHub
  Notes: 📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
• ycdxsb/PocOrExp_in_Github | stars: 1136 | updated: 2026-03-30 | https://github.com/ycdxsb/PocOrExp_in_Github
  Notes: Automatically Collect POC or EXP from GitHub by CVE ID.

People and Organizations Mentioned

• microsoft
• nomi-sec
• ycdxsb

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Create low-privilege users on microsoft / windows server 2003 and validate that patching blocks unauthorized admin-level actions.
4. Compare token/privilege transitions in Windows Event Logs before and after remediation.
5. Tune detections for unusual group membership changes and SYSTEM-level process launches from user sessions.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2011-2005
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2011-2005
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005
• Repository example: https://github.com/nomi-sec/PoC-in-GitHub
• Repository example: https://github.com/ycdxsb/PocOrExp_in_Github

This content is for defensive security training and authorized validation only.