{"id":"CVE-2011-2005","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-2005","generatedAt":"2026-10-31T23:39:52.208Z","title":"Microsoft Ancillary Function Driver (afd.sys) Improper Input Validation Vulnerability","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.\"","published":"2011-10-12T02:52:44.000Z","lastModified":"2026-06-16T23:30:35.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["microsoft/windows server 2003","microsoft/windows xp"],"epss":{"score":0.31761,"percentile":0.98296,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2022-03-28","dueDate":"2022-04-18","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2005"},"exploits":{"count":2,"verified":true,"firstPublished":"2011-11-30","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":21844,"kind":"exploit","title":"Microsoft Windows - 'AfdJoinLeaf' Local Privilege Escalation (MS11-080) (Metasploit)","url":"https://www.exploit-db.com/exploits/21844","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/21844.rb","file":"exploits/windows/local/21844.rb","published":"2012-10-10","added":"2012-10-10","updated":"2012-10-10","author":"Metasploit","type":"local","platform":"windows","port":null,"verified":true,"codes":["CVE-2011-2005","OSVDB-76232","MS11-080"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null},{"edbId":18176,"kind":"exploit","title":"Microsoft Windows XP/2003 - 'afd.sys' Local Privilege Escalation (MS11-080)","url":"https://www.exploit-db.com/exploits/18176","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/18176.py","file":"exploits/windows/local/18176.py","published":"2011-11-30","added":"2011-11-30","updated":"2011-11-30","author":"ryujin","type":"local","platform":"windows","port":null,"verified":true,"codes":["CVE-2011-2005","OSVDB-76232","MS11-080"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":"http://www.exploit-db.com/screenshots/idlt18500/ms11-080-screenie.png","referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-080","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13114","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-2005","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-2005","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}