{"id":"CVE-2012-1889","published":"2012-06-13T04:46:46Z","modified":"2026-06-16T23:40:29Z","title":"Microsoft XML Core Services Memory Corruption Vulnerability","vendor":"Microsoft","product":"XML Core Services","tier":"core","eol":null,"description":{"text":"Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","provenance":"source","from":"NVD"},"summary":{"text":"Microsoft XML Core Services (versions 3.0, 4.0, 5.0 and 6.0) contains a memory corruption flaw in which code reads from uninitialized memory locations. A remote attacker can exploit it to execute arbitrary code or cause a denial of service by getting a victim to visit a crafted web page, requiring no authentication but user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:00:17Z"},"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":0.83516,"percentile":0.99683,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-06-08","dueDate":"2022-06-22","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2012-1889","provenance":"source"},"vulncheckKev":{"dateAdded":"2012-09-01","exploitedFirstSeen":"2012-09-01","ransomware":false,"evidence":[{"url":"http://www.cs.cornell.edu/courses/cs6410/2012fa/slides/Symantec_ElderwoodProject_2012.pdf","date":"2012-09-01"},{"url":"https://cisa.gov/news-events/alerts/2012/06/13/microsoft-releases-security-advisory-microsoft-xml-core-services","date":"2012-10-23"},{"url":"https://cisa.gov/news-events/alerts/2012/06/22/microsoft-xml-core-services-attack-activity","date":"2013-01-24"},{"url":"https://cybersecurity.att.com/blogs/labs-research/new-sykipot-developments","date":"2013-03-21"},{"url":"https://paper.seebug.org/papers/APT/APT_CyberCriminal_Campagin/2013/hidden_lynx.pdf","date":"2013-09-17"},{"url":"https://www.recordedfuture.com/hidden-lynx-analysis/","date":"2014-05-01"},{"url":"https://blog.talosintelligence.com/2014/10/threat-spotlight-group-72.html","date":"2014-10-14"},{"url":"https://s7d2.scene7.com/is/content/cylance/prod/cylance-web/en-us/resources/knowledge-center/resource-library/reports/Op_Dust_Storm_Report.pdf","date":"2016-02-23"},{"url":"https://unit42.paloaltonetworks.com/unit42-web-based-threats-2018-q2-u-s-remains-1-malicious-web-addresses-china-falls-2-7/","date":"2018-09-05"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"}],"evidenceTotal":11,"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-787","name":"Out-of-bounds Write"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"references":[{"url":"http://technet.microsoft.com/security/advisory/2719615","tags":["Vendor Advisory"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-174A.html","tags":["Third Party Advisory","US Government Resource"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-192A.html","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-043","tags":["Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15195","tags":["Broken Link"]},{"url":"http://technet.microsoft.com/security/advisory/2719615","tags":["Vendor Advisory"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-174A.html","tags":["Third Party Advisory","US Government Resource"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-192A.html","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-043","tags":["Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15195","tags":["Broken Link"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-1889","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: Victim visits crafted website triggers exploitation","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted web site","start":197,"end":219}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Arbitrary code execution is direct impact","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code","start":98,"end":147}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1499.004","name":"Application or System Exploitation","tactics":["impact"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Memory corruption causes denial of service","mappingType":"primary_impact","evidence":[{"from":"description","quote":"cause a denial of service (memory corruption)","start":151,"end":196}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-bd66404e0d19e11c07fa","title":"Operation Dust Storm","publisher":"s7d2.scene7.com","url":"https://s7d2.scene7.com/is/content/cylance/prod/cylance-web/en-us/resources/knowledge-center/resource-library/reports/Op_Dust_Storm_Report.pdf","date":null,"mentions":[{"quote":"Flash exploit the group had used previously, and CVE-\r\n2012-1889, an Internet Explorer zero-day.","start":8040,"end":8136}]},{"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-2012-1889","start":115933,"end":115946},{"quote":" CVE-2012-1889, a memory corruption vulnerability that affects older","start":116221,"end":116290},{"quote":"CVE-2012-1889, 64","start":261384,"end":261401}]},{"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":"CVE-2012-1889","start":95562,"end":95575},{"quote":"43, 50, 65, 143\r\nCroatia, 128\r\nCrowti, 74, 80, 143\r\nCVE identifier, 31, 32, 40\r\nCVE-2009-0075, 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,","start":237847,"end":238163}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2012-1899","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-1899","exploited":true,"exploitedSince":"2022-06-08","provenance":"source"},"exploits":[{"id":19186,"url":"https://www.exploit-db.com/exploits/19186","title":"Microsoft XML Core Services - MSXML Uninitialized Memory Corruption (MS12-043) (Metasploit)","type":"remote","platform":"windows","date":"2012-06-16","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2012-06-16"},"pocGithub":{"count":2,"skipped":0,"earliest":"2016-09-25","earliestUrl":"https://github.com/whu-enjoy/CVE-2012-1889","repos":[{"name":"whu-enjoy/CVE-2012-1889","url":"https://github.com/whu-enjoy/CVE-2012-1889","stars":3,"created":"2016-09-25"},{"name":"l-iberty/cve-2012-1889","url":"https://github.com/l-iberty/cve-2012-1889","stars":1,"created":"2019-11-20"}]},"metasploit":[{"name":"MS12-043 Microsoft XML Core Services MSXML Uninitialized Memory Corruption","module":"exploit/windows/browser/msxml_get_definition_code_exec","type":"exploit","disclosureDate":"2012-06-12","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/msxml_get_definition_code_exec.rb"}],"first":{"date":"2012-06-12","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/msxml_get_definition_code_exec.rb"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1059","T1499.004"],"provenance":"ai"}],"timeline":[{"date":"2012-06-12","kind":"exploit-public","label":"First public exploit: Metasploit; later: Exploit-DB 2012-06-16, PoC-in-GitHub 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a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 5171 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.94,"detail":"percentile 0.9968"},{"name":"Named in threat reports","points":7.74,"detail":"3 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 Exploit-DB entry; 2 PoC-in-GitHub repos; 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":0.0,"detail":"supported or unknown"}]}}