CVE-2011-2005

CRITICALNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-28), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 32%CVSS: 7.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
32%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

October 12, 2011

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 19, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005
generic

Microsoft Security Bulletin MS11-080 - Important | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080

Data Freshness Timeline

(refreshed 55× in last 7d / 234× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 707 total refreshes for this CVE.

  1. 2026-08-28 05:43 UTCGHSA enrichment
  2. 2026-08-28 01:45 UTCGHSA enrichment
  3. 2026-08-27 21:49 UTCGHSA enrichment
  4. 2026-08-27 17:54 UTCEG score recompute
  5. 2026-08-27 17:54 UTCGHSA enrichment
  6. 2026-08-27 17:22 UTCCISA KEV update
  7. 2026-08-27 13:56 UTCGHSA enrichment
  8. 2026-08-27 10:01 UTCGHSA enrichment
  9. 2026-08-27 06:05 UTCGHSA enrichment
  10. 2026-08-27 02:02 UTCGHSA enrichment
  11. 2026-08-26 22:07 UTCGHSA enrichment
  12. 2026-08-26 18:12 UTCEG score recompute
  13. 2026-08-26 18:12 UTCGHSA enrichment
  14. 2026-08-26 17:41 UTCCISA KEV update
  15. 2026-08-26 14:16 UTCGHSA enrichment
  16. 2026-08-26 10:20 UTCGHSA enrichment
  17. 2026-08-26 06:23 UTCGHSA enrichment
  18. 2026-08-26 02:23 UTCGHSA enrichment
  19. 2026-08-25 22:28 UTCGHSA enrichment
  20. 2026-08-25 18:33 UTCGHSA enrichment
  21. 2026-08-25 14:38 UTCEG score recompute
  22. 2026-08-25 14:38 UTCGHSA enrichment
  23. 2026-08-25 13:43 UTCEPSS rescore
  24. 2026-08-25 10:43 UTCGHSA enrichment
  25. 2026-08-25 06:48 UTCGHSA enrichment
Show 75 more
  1. 2026-08-25 02:53 UTCGHSA enrichment
  2. 2026-08-24 22:57 UTCGHSA enrichment
  3. 2026-08-24 19:01 UTCGHSA enrichment
  4. 2026-08-24 18:52 UTCCISA KEV update
  5. 2026-08-24 15:06 UTCEG score recompute
  6. 2026-08-24 15:05 UTCGHSA enrichment
  7. 2026-08-24 11:09 UTCEG score recompute
  8. 2026-08-24 11:09 UTCGHSA enrichment
  9. 2026-08-24 07:13 UTCGHSA enrichment
  10. 2026-08-24 03:17 UTCGHSA enrichment
  11. 2026-08-23 23:21 UTCGHSA enrichment
  12. 2026-08-23 19:26 UTCGHSA enrichment
  13. 2026-08-23 15:30 UTCGHSA enrichment
  14. 2026-08-23 11:35 UTCGHSA enrichment
  15. 2026-08-23 07:39 UTCGHSA enrichment
  16. 2026-08-23 03:44 UTCEG score recompute
  17. 2026-08-23 03:43 UTCGHSA enrichment
  18. 2026-08-22 23:48 UTCGHSA enrichment
  19. 2026-08-22 19:53 UTCGHSA enrichment
  20. 2026-08-22 15:58 UTCGHSA enrichment
  21. 2026-08-22 12:02 UTCGHSA enrichment
  22. 2026-08-22 08:07 UTCGHSA enrichment
  23. 2026-08-22 04:11 UTCGHSA enrichment
  24. 2026-08-22 00:15 UTCEG score recompute
  25. 2026-08-22 00:15 UTCGHSA enrichment
  26. 2026-08-21 20:20 UTCGHSA enrichment
  27. 2026-08-21 16:49 UTCCISA KEV update
  28. 2026-08-21 16:25 UTCGHSA enrichment
  29. 2026-08-21 12:30 UTCGHSA enrichment
  30. 2026-08-21 08:35 UTCGHSA enrichment
  31. 2026-08-21 04:40 UTCGHSA enrichment
  32. 2026-08-21 00:44 UTCEG score recompute
  33. 2026-08-21 00:44 UTCGHSA enrichment
  34. 2026-08-20 20:49 UTCGHSA enrichment
  35. 2026-08-20 17:06 UTCCISA KEV update
  36. 2026-08-20 16:54 UTCGHSA enrichment
  37. 2026-08-20 12:59 UTCGHSA enrichment
  38. 2026-08-20 09:03 UTCGHSA enrichment
  39. 2026-08-20 05:08 UTCGHSA enrichment
  40. 2026-08-20 01:12 UTCGHSA enrichment
  41. 2026-08-19 21:17 UTCGHSA enrichment
  42. 2026-08-19 17:33 UTCCISA KEV update
  43. 2026-08-19 17:21 UTCEG score recompute
  44. 2026-08-19 17:21 UTCGHSA enrichment
  45. 2026-08-19 16:58 UTCEPSS rescore
  46. 2026-08-19 13:22 UTCGHSA enrichment
  47. 2026-08-19 09:21 UTCGHSA enrichment
  48. 2026-08-19 05:24 UTCGHSA enrichment
  49. 2026-08-19 01:28 UTCGHSA enrichment
  50. 2026-08-18 21:32 UTCGHSA enrichment
  51. 2026-08-18 17:37 UTCEG score recompute
  52. 2026-08-18 17:37 UTCGHSA enrichment
  53. 2026-08-18 16:58 UTCCISA KEV update
  54. 2026-08-18 13:42 UTCEPSS rescore
  55. 2026-08-18 13:42 UTCGHSA enrichment
  56. 2026-08-18 09:45 UTCGHSA enrichment
  57. 2026-08-18 05:49 UTCGHSA enrichment
  58. 2026-08-18 01:54 UTCGHSA enrichment
  59. 2026-08-17 21:57 UTCGHSA enrichment
  60. 2026-08-17 18:02 UTCGHSA enrichment
  61. 2026-08-17 14:05 UTCGHSA enrichment
  62. 2026-08-17 13:56 UTCCISA KEV update
  63. 2026-08-17 10:10 UTCGHSA enrichment
  64. 2026-08-17 06:15 UTCGHSA enrichment
  65. 2026-08-17 02:20 UTCGHSA enrichment
  66. 2026-08-16 22:25 UTCGHSA enrichment
  67. 2026-08-16 18:30 UTCEG score recompute
  68. 2026-08-16 18:30 UTCGHSA enrichment
  69. 2026-08-16 14:35 UTCGHSA enrichment
  70. 2026-08-16 10:39 UTCGHSA enrichment
  71. 2026-08-16 06:44 UTCGHSA enrichment
  72. 2026-08-16 02:49 UTCEG score recompute
  73. 2026-08-16 02:49 UTCGHSA enrichment
  74. 2026-08-15 22:54 UTCGHSA enrichment
  75. 2026-08-15 18:59 UTCGHSA enrichment

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-21844✓ verified
    First seen Oct 10, 2012

    Microsoft Windows - 'AfdJoinLeaf' Local Privilege Escalation (MS11-080) (Metasploit)

    Open source ↗
  • Exploit-DBEDB-18176✓ verified
    First seen Nov 30, 2011

    Microsoft Windows XP/2003 - 'afd.sys' Local Privilege Escalation (MS11-080)

    Open source ↗
  • Metasploitexploit/windows/local/ms11_080_afdjoinleaf✓ verified
    First seen Nov 30, 2011

    MS11-080 AfdJoinLeaf Privilege Escalation

    Open source ↗

Frequently asked(6)

What is CVE-2011-2005?
CVE-2011-2005 is a critical vulnerability published on October 12, 2011. 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…
When was CVE-2011-2005 disclosed?
CVE-2011-2005 was first published in the National Vulnerability Database on October 12, 2011, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-2005 actively exploited?
Yes. CISA added CVE-2011-2005 to the Known Exploited Vulnerabilities catalog on March 28, 2022, affecting Microsoft Ancillary Function Driver (afd.sys). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2011-2005?
CVE-2011-2005 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2011-2005?
CVE-2011-2005 affects Microsoft Ancillary Function Driver (afd.sys). The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2011-2005?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2005, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2011-2005

Explore →

Is Your Infrastructure Affected by CVE-2011-2005?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs