{"id":"CVE-2013-3660","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-3660","generatedAt":"2026-10-31T23:41:08.813Z","title":"Microsoft Win32k Privilege Escalation Vulnerability","description":"The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka \"Win32k Read AV Vulnerability.\"","published":"2013-05-24T20:55:02.000Z","lastModified":"2026-06-16T23:55:36.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","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":["CWE-119"],"affected":["microsoft/windows 7","microsoft/windows 8","microsoft/windows rt","microsoft/windows server 2003","microsoft/windows server 2008","microsoft/windows server 2012","microsoft/windows vista","microsoft/windows xp"],"epss":{"score":0.39318,"percentile":0.98603,"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-2013-3660"},"exploits":{"count":3,"verified":true,"firstPublished":"2013-05-21","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":26554,"kind":"exploit","title":"Microsoft Windows - 'EPATHOBJ::pprFlattenRec' Local Privilege Escalation (Metasploit)","url":"https://www.exploit-db.com/exploits/26554","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/26554.rb","file":"exploits/windows/local/26554.rb","published":"2013-07-02","added":"2013-07-02","updated":"2013-07-02","author":"Metasploit","type":"local","platform":"windows","port":null,"verified":true,"codes":["CVE-2013-3661","OSVDB-93539","CVE-2013-3660","CVE-2013-3130"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null},{"edbId":25912,"kind":"exploit","title":"Microsoft Windows NT/2000/2003/2008/XP/Vista/7/8 - 'EPATHOBJ' Local Ring","url":"https://www.exploit-db.com/exploits/25912","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/25912.c","file":"exploits/windows/local/25912.c","published":"2013-06-03","added":"2013-06-03","updated":"2013-06-04","author":"Tavis Ormandy","type":"local","platform":"windows","port":null,"verified":true,"codes":["CVE-2013-3661","CVE-2013-3660","CVE-2013-3130","OSVDB-93539"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":"http://www.exploit-db.com/screenshots/idlt26000/screen-shot-2013-06-03-at-65818-am.png","referenceUrl":null},{"edbId":25611,"kind":"exploit","title":"Microsoft Windows - Win32k!EPATHOBJ::pprFlattenRec Uninitialized Next Pointer Testcase","url":"https://www.exploit-db.com/exploits/25611","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/25611.txt","file":"exploits/windows/dos/25611.txt","published":"2013-05-21","added":"2013-05-21","updated":"2013-05-21","author":"Tavis Ormandy","type":"dos","platform":"windows","port":null,"verified":true,"codes":["OSVDB-93539","CVE-2013-3661","CVE-2013-3660","CVE-2013-3130"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"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":"http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0090.html","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0094.html","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2013-06/0006.html","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/53435","tags":["Broken Link","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://twitter.com/taviso/statuses/309157606247768064","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://twitter.com/taviso/statuses/335557286657400832","tags":["Not Applicable"],"source":"cve@mitre.org"},{"url":"http://www.computerworld.com/s/article/9239477","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://www.exploit-db.com/exploits/25611/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.osvdb.org/93539","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://www.reddit.com/r/netsec/comments/1eqh66/0day_windows_kernel_epathobj_vulnerability/","tags":["Exploit","Issue Tracking"],"source":"cve@mitre.org"},{"url":"http://www.theverge.com/2013/5/23/4358400/google-engineer-bashes-microsoft-discloses-windows-flaw","tags":["Press/Media Coverage"],"source":"cve@mitre.org"},{"url":"http://www.us-cert.gov/ncas/alerts/TA13-190A","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-053","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17360","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0090.html","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0094.html","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2013-06/0006.html","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/53435","tags":["Broken Link","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://twitter.com/taviso/statuses/309157606247768064","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://twitter.com/taviso/statuses/335557286657400832","tags":["Not Applicable"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.computerworld.com/s/article/9239477","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.exploit-db.com/exploits/25611/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/93539","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.reddit.com/r/netsec/comments/1eqh66/0day_windows_kernel_epathobj_vulnerability/","tags":["Exploit","Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.theverge.com/2013/5/23/4358400/google-engineer-bashes-microsoft-discloses-windows-flaw","tags":["Press/Media Coverage"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/ncas/alerts/TA13-190A","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-053","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17360","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3660","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-3660","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."}