{"id":"CVE-2023-36584","published":"2023-10-10T18:15:14Z","modified":"2026-06-17T06:06:36Z","title":"Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"Windows Mark of the Web Security Feature Bypass Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"A security feature bypass flaw exists in the Mark of the Web (MOTW) component of Microsoft Windows. An attacker can exploit it remotely over the network without authentication, but it requires a user to interact with a crafted file or link.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:31Z"},"cvss":{"score":5.4,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L","provenance":"source","from":"NVD"},"epss":{"score":0.03251,"percentile":0.88303,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2023-11-16","dueDate":"2023-12-07","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584 ;  https://nvd.nist.gov/vuln/detail/CVE-2023-36584","provenance":"source"},"vulncheckKev":{"dateAdded":"2023-11-13","exploitedFirstSeen":"2023-11-13","ransomware":false,"evidence":[{"url":"https://unit42.paloaltonetworks.com/new-cve-2023-36584-discovered-in-attack-chain-used-by-russian-apt/","date":"2023-11-13"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-11-16"},{"url":"https://assets.beyondtrust.com/assets/documents/BT_whitepaper_Microsoft-Vulnerabilities-Report-2024.pdf","date":"2024-04-29"}],"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":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584","tags":["Patch","Vendor Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36584","tags":["US Government Resource"]}],"techniques":[{"id":"T1204.001","name":"Malicious Link","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: User opens crafted file, bypassing MOTW","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Windows Mark of the Web Security Feature Bypass","start":0,"end":47}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1553.005","name":"Mark-of-the-Web Bypass","tactics":["defense-impairment"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Bypasses Mark of the Web protections on files","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Mark of the Web Security Feature Bypass","start":8,"end":47}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-40529","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-40529","exploited":true,"exploitedSince":"2023-11-16","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.001"],"provenance":"ai"},{"stage":"primary","techniques":["T1553.005"],"provenance":"ai"}],"timeline":[{"date":"2023-10-10","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-36584","provenance":"source"},{"date":"2023-11-13","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://unit42.paloaltonetworks.com/new-cve-2023-36584-discovered-in-attack-chain-used-by-russian-apt/","provenance":"source"},{"date":"2023-11-16","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2023-11-16","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-40529","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":37},"priority":{"score":59.4,"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 1081 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":17.66,"detail":"percentile 0.8830"},{"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":3.78,"detail":"base score 5.4"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}