{"id":"CVE-2009-1537","published":"2009-05-29T18:30:00Z","modified":"2026-06-16T23:07:28Z","title":"Microsoft DirectX NULL Byte Overwrite Vulnerability","vendor":"Microsoft","product":"DirectX","tier":"core","eol":null,"description":{"text":"Unspecified vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows 2000 SP4, Windows XP SP2 and SP3, and Windows Server 2003 SP2 allows remote attackers to execute arbitrary code via a crafted QuickTime media file, as exploited in the wild in May 2009, aka \"DirectX NULL Byte Overwrite Vulnerability.\"","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an unspecified vulnerability in the QuickTime Movie Parser Filter, inside quartz.dll in DirectShow, part of Microsoft DirectX 7.0 through 9.0c on the affected Windows releases. An attacker who gets a crafted QuickTime media file in front of a victim can execute arbitrary code remotely, provided the victim opens or plays the file, so user interaction is required and no prior authentication is needed.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:12:35Z"},"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":0.51362,"percentile":0.98935,"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/securitybulletins/2009/ms09-028 ; https://nvd.nist.gov/vuln/detail/CVE-2009-1537","provenance":"source"},"vulncheckKev":{"dateAdded":"2009-05-29","exploitedFirstSeen":"2009-05-29","ransomware":false,"evidence":[{"url":"https://www.cve.org/CVERecord?id=CVE-2009-1537","date":"2009-05-29"},{"url":"https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-028","date":"2009-08-19"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-05-20"}],"evidenceTotal":3,"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-158","name":"Improper Neutralization of Null Byte or NUL Character"}],"references":[{"url":"http://blogs.technet.com/msrc/archive/2009/05/28/microsoft-security-advisory-971778-vulnerability-in-microsoft-directshow-released.aspx","tags":["Vendor Advisory"]},{"url":"http://blogs.technet.com/srd/archive/2009/05/28/new-vulnerability-in-quicktime-parsing.aspx","tags":["Vendor Advisory"]},{"url":"http://isc.sans.org/diary.html?storyid=6481","tags":["Not Applicable"]},{"url":"http://osvdb.org/54797","tags":["Broken Link"]},{"url":"http://secunia.com/advisories/35268","tags":["Vendor Advisory"]},{"url":"http://www.microsoft.com/technet/security/advisory/971778.mspx","tags":["Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/35139","tags":["Broken Link"]},{"url":"http://www.securitytracker.com/id?1022299","tags":["Broken Link"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-195A.html","tags":["US Government Resource"]},{"url":"http://www.vupen.com/english/advisories/2009/1445","tags":["Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/1886","tags":["Vendor Advisory"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-028","tags":["Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6237","tags":["Broken Link"]},{"url":"http://blogs.technet.com/msrc/archive/2009/05/28/microsoft-security-advisory-971778-vulnerability-in-microsoft-directshow-released.aspx","tags":["Vendor Advisory"]},{"url":"http://blogs.technet.com/srd/archive/2009/05/28/new-vulnerability-in-quicktime-parsing.aspx","tags":["Vendor Advisory"]},{"url":"http://isc.sans.org/diary.html?storyid=6481","tags":["Not Applicable"]},{"url":"http://osvdb.org/54797","tags":["Broken Link"]},{"url":"http://secunia.com/advisories/35268","tags":["Vendor Advisory"]},{"url":"http://www.microsoft.com/technet/security/advisory/971778.mspx","tags":["Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/35139","tags":["Broken Link"]},{"url":"http://www.securitytracker.com/id?1022299","tags":["Broken Link"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-195A.html","tags":["US Government Resource"]},{"url":"http://www.vupen.com/english/advisories/2009/1445","tags":["Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/1886","tags":["Vendor Advisory"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-028","tags":["Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6237","tags":["Broken Link"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-1537","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: Malicious media file delivered to victim triggers exploit","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted QuickTime media file","start":252,"end":286}],"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: Successful exploitation yields arbitrary code execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code","start":202,"end":251}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2009-1533","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-1533","exploited":true,"exploitedSince":"2026-05-20","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2009-05-29","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1537","provenance":"source"},{"date":"2009-05-29","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.cve.org/CVERecord?id=CVE-2009-1537","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-2009-1533","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":6200},"priority":{"score":63.9,"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 6362 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.79,"detail":"percentile 0.9893"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"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"}]}}