{"id":"CVE-2010-0249","published":"2010-01-15T17:30:00Z","modified":"2026-06-16T23:15:47Z","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, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka \"HTML Object Memory Corruption Vulnerability.\"","provenance":"source","from":"NVD"},"summary":{"text":"A use-after-free flaw in Microsoft Internet Explorer 6, 6 SP1, 7 and 8 on several Windows versions, including Windows 2000 SP4, XP, Server 2003, Vista, Server 2008 and Windows 7, arises when the browser accesses a pointer to an object that has already been deleted, owing to incorrectly initialized memory and improper object handling. A remote attacker can execute arbitrary code by getting a user to load crafted web content, with no authentication required and user interaction needed.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:10:14Z"},"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":0.91939,"percentile":0.99817,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2026-05-20","dueDate":"2026-06-03","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://learn.microsoft.com/en-us/security-updates/SecurityAdvisories/2010/979352 ; https://nvd.nist.gov/vuln/detail/CVE-2010-0249","provenance":"source"},"vulncheckKev":{"dateAdded":"2010-01-15","exploitedFirstSeen":"2010-01-15","ransomware":false,"evidence":[{"url":"https://www.cve.org/CVERecord?id=CVE-2010-0249","date":"2010-01-15"},{"url":"https://www.virusbulletin.com/virusbulletin/2010/05/exploit-kit-explosion-part-two-vectors-attack/","date":"2010-05-01"},{"url":"https://securelist.com/cybercrime-raiders/36323/","date":"2010-10-12"},{"url":"http://www.cs.cornell.edu/courses/cs6410/2012fa/slides/Symantec_ElderwoodProject_2012.pdf","date":"2012-09-01"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-05-20"}],"evidenceTotal":6,"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://blogs.technet.com/msrc/archive/2010/01/14/security-advisory-979352.aspx","tags":["Broken Link","Vendor Advisory"]},{"url":"http://news.cnet.com/8301-27080_3-10435232-245.html","tags":["Broken Link"]},{"url":"http://osvdb.org/61697","tags":["Broken Link"]},{"url":"http://securitytracker.com/id?1023462","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://support.microsoft.com/kb/979352","tags":["Patch","Vendor Advisory"]},{"url":"http://www.exploit-db.com/exploits/11167","tags":["Exploit","Third 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Link"]},{"url":"http://blogs.technet.com/msrc/archive/2010/01/14/security-advisory-979352.aspx","tags":["Broken Link","Vendor Advisory"]},{"url":"http://news.cnet.com/8301-27080_3-10435232-245.html","tags":["Broken Link"]},{"url":"http://osvdb.org/61697","tags":["Broken Link"]},{"url":"http://securitytracker.com/id?1023462","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://support.microsoft.com/kb/979352","tags":["Patch","Vendor Advisory"]},{"url":"http://www.exploit-db.com/exploits/11167","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.kb.cert.org/vuls/id/492515","tags":["Third Party Advisory","US Government Resource"]},{"url":"http://www.microsoft.com/technet/security/advisory/979352.mspx","tags":["Broken Link","Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/37815","tags":["Broken Link","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA10-055A.html","tags":["Broken Link","Third Party Advisory","US Government Resource"]},{"url":"http://www.vupen.com/english/advisories/2010/0135","tags":["Broken Link"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-002","tags":["Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/55642","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6835","tags":["Broken Link"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-0249","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 web content exploiting browser memory corruption","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code by accessing a pointer","start":236,"end":308}],"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: Exploited browser client executes attacker-controlled code","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code by accessing a pointer","start":236,"end":308}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2010-0280","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-0280","exploited":true,"exploitedSince":"2026-05-20","provenance":"source"},"exploits":[{"id":11167,"url":"https://www.exploit-db.com/exploits/11167","title":"Microsoft Internet Explorer 6 - 'Aurora' Memory Corruption (MS10-002)","type":"remote","platform":"windows","date":"2010-01-17","verified":true,"provenance":"source"},{"id":16599,"url":"https://www.exploit-db.com/exploits/16599","title":"Microsoft Internet Explorer - 'Aurora' Memory Corruption (MS10-002) (Metasploit)","type":"remote","platform":"windows","date":"2010-07-12","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":2,"earliest":"2010-01-17"},"metasploit":[{"name":"MS10-002 Microsoft Internet Explorer \"Aurora\" Memory 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(NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2010-0249","provenance":"source"},{"date":"2010-01-15","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.cve.org/CVERecord?id=CVE-2010-0249","provenance":"source"},{"date":"2026-05-20","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2026-05-20","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-0280","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":5969},"priority":{"score":54.1,"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 6131 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS 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