{"id":"CVE-2013-2551","published":"2013-03-11T10:55:01Z","modified":"2026-06-16T23:53:36Z","title":"Microsoft Internet Explorer Use-After-Free Vulnerability","vendor":"Microsoft","product":"Internet Explorer","tier":"core","eol":{"product":"Internet Explorer","since":"2022-06-15","note":"No security updates; remove it."},"description":{"text":"Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka \"Internet Explorer Use After Free Vulnerability,\" a different vulnerability than CVE-2013-1308 and CVE-2013-1309.","provenance":"source","from":"NVD"},"summary":{"text":"A use-after-free flaw in Microsoft Internet Explorer 6 through 10 lies in how the browser handles deleted objects. An attacker who gets a user to visit a crafted web site can trigger access to a deleted object and execute arbitrary code, which requires user interaction but no prior authentication or network access beyond reaching that page.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T06:54:58Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.73918,"percentile":0.99477,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-03-28","dueDate":"2022-04-18","ransomware":true,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2013-2551","provenance":"source"},"vulncheckKev":{"dateAdded":"2015-02-23","exploitedFirstSeen":"2015-02-23","ransomware":true,"evidence":[{"url":"https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/rig-exploit-kit-diving-deeper-into-the-infrastructure/","date":"2015-02-23"},{"url":"https://threatpost.com/cryptolocker-variant-coming-after-gamers/111611/","date":"2015-03-12"},{"url":"https://www.oreilly.com/content/threat-intelligence-and-ransomware/","date":"2016-12-13"},{"url":"https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/terror-exploit-kit-more-like-error-exploit-kit/","date":"2017-01-09"},{"url":"https://blog.malwarebytes.com/cybercrime/2017/08/rig-exploit-kit-distributes-princess-ransomware/","date":"2017-08-31"},{"url":"https://web.archive.org/web/20220227045141/https://risksense.com/wp-content/uploads/2019/09/RiskSense-Spotlight-Report-Ransomware.pdf","date":"2019-09-01"},{"url":"https://cybersecurityworks.com/blog/ransomware/why-old-is-gold-for-ransomware.html","date":"2021-04-26"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://cybersecurityworks.com/howdymanage/uploads/file/ransomware-_-2022-spotlight-report_compressed.pdf","date":"2022-01-26"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-03-28"}],"evidenceTotal":10,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"http://h30499.www3.hp.com/t5/HP-Security-Research-Blog/Pwn2Own-2013/ba-p/5981157","tags":["Broken Link","Third Party Advisory"]},{"url":"http://twitter.com/VUPEN/statuses/309479075385327617","tags":["Broken Link"]},{"url":"http://twitter.com/thezdi/statuses/309452625173176320","tags":["Not Applicable"]},{"url":"http://www.us-cert.gov/ncas/alerts/TA13-134A","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-037","tags":["Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16317","tags":["Broken Link"]},{"url":"http://h30499.www3.hp.com/t5/HP-Security-Research-Blog/Pwn2Own-2013/ba-p/5981157","tags":["Broken Link","Third Party Advisory"]},{"url":"http://twitter.com/VUPEN/statuses/309479075385327617","tags":["Broken Link"]},{"url":"http://twitter.com/thezdi/statuses/309452625173176320","tags":["Not Applicable"]},{"url":"http://www.us-cert.gov/ncas/alerts/TA13-134A","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-037","tags":["Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16317","tags":["Broken Link"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-2551","tags":["US Government Resource"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Drive-by via crafted malicious website","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code via a crafted web site","start":73,"end":145}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Client application exploitation enables arbitrary code execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10","start":0,"end":72}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-93c55e10ab45afc37c85","title":"Microsoft Security","publisher":"download.microsoft.com","url":"https://download.microsoft.com/download/E/B/0/EB0F50CC-989C-4B66-B7F6-68CD3DC90DE3/Microsoft_Security_Intelligence_Report_Volume_21_English.pdf","date":null,"mentions":[{"quote":"(CVE-2013-2551), Adobe Flash Player (CVE-2015-0310, CVE-2015-0311, and","start":99150,"end":99220},{"quote":"62\r\nCVE-2010-3653, 63\r\nCVE-2011-0097, 62\r\nCVE-2011-0611, 63\r\nCVE-2011-1823, 60, 61\r\nCVE-2012-0056, 60\r\nCVE-2012-0158, 62\r\nCVE-2012-0507, 57\r\nCVE-2012-1723, 56, 57, 58, 59\r\nCVE-2012-1889, 64\r\nCVE-2013-0074, 56\r\nCVE-2013-0422, 57, 59\r\nCVE-2013-1493, 56\r\nCVE-2013-2423, 56\r\nCVE-2013-2460, 56\r\nCVE-2013-2551,","start":261212,"end":261516}]},{"id":"SRC-619721166ae9d9d7fdcd","title":"Microsoft Security","publisher":"download.microsoft.com","url":"https://download.microsoft.com/download/4/4/C/44CDEF0E-7924-4787-A56A-16261691ACE3/Microsoft_Security_Intelligence_Report_Volume_19_English.pdf","date":null,"mentions":[{"quote":"2013-0074), Internet Explorer (CVE-2013-2551), Adobe Flash","start":79934,"end":79992},{"quote":" Encounters involving exploits targeting CVE-2013-2551, a use-after-free","start":95036,"end":95109},{"quote":"CVE-2013-2551","start":95589,"end":95602},{"quote":"54\r\nCVE-2010-0188, 52\r\nCVE-2010-0840, 47, 49\r\nCVE-2010-2568, 40, 43, 50\r\nCVE-2010-3336, 52\r\nCVE-2011-1823, 50, 51\r\nCVE-2011-3874, 50, 51\r\nCVE-2012-0158, 52\r\nCVE-2012-0507, 47, 49\r\nCVE-2012-1723, 47, 48, 49\r\nCVE-2012-1889, 54\r\nCVE-2013-0074, 46\r\nCVE-2013-0422, 47, 49\r\nCVE-2013-2460, 46\r\nCVE-2013-2551, 46,","start":237942,"end":238247}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2013-2493","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-2493","exploited":true,"exploitedSince":"2022-03-28","provenance":"source"},"exploits":[{"id":26175,"url":"https://www.exploit-db.com/exploits/26175","title":"Microsoft Internet Explorer - COALineDashStyleArray Integer Overflow (MS13-009) (Metasploit)","type":"remote","platform":"windows","date":"2013-06-13","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2013-06-13"},"metasploit":[{"name":"MS13-037 Microsoft Internet Explorer COALineDashStyleArray Integer Overflow","module":"exploit/windows/browser/ms13_037_svg_dashstyle","type":"exploit","disclosureDate":"2013-03-06","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/ms13_037_svg_dashstyle.rb"}],"first":{"date":"2013-03-06","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/ms13_037_svg_dashstyle.rb"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1203"],"provenance":"ai"}],"timeline":[{"date":"2013-03-06","kind":"exploit-public","label":"First public exploit: Metasploit; later: Exploit-DB 2013-06-13","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/ms13_037_svg_dashstyle.rb","provenance":"source"},{"date":"2013-03-11","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-2551","provenance":"source"},{"date":"2015-02-23","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/rig-exploit-kit-diving-deeper-into-the-infrastructure/","provenance":"source"},{"date":"2022-03-28","kind":"kev","label":"Added to CISA KEV (known ransomware use)","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-03-28","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-2493","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":3304},"priority":{"score":70.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 4266 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":19.9,"detail":"percentile 0.9948"},{"name":"Named in threat reports","points":6.13,"detail":"2 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 Exploit-DB entry; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":-15.0,"detail":"No patches exist; remove or isolate it"}]},"lineage":{"familyId":"fam-class-microsoft-internet-explorer-cwe-416"}}