{"id":"CVE-2024-21412","published":"2024-02-13T18:15:59Z","modified":"2026-08-10T16:18:51Z","title":"Microsoft Windows Internet Shortcut Files Security Feature Bypass Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"Internet Shortcut Files Security Feature Bypass Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a security feature bypass in the Internet Shortcut file handling component of Microsoft Windows. An attacker can exploit it over the network with no privileges required, but it needs a user to interact with a crafted shortcut file, and the result is a failure of a protection mechanism that can expose high confidentiality and integrity impact.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:00:05Z"},"cvss":{"score":8.1,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.9941,"percentile":0.99941,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2024-02-13","dueDate":"2024-03-05","ransomware":true,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2024-21412; https://nvd.nist.gov/vuln/detail/CVE-2024-21412","provenance":"source"},"vulncheckKev":{"dateAdded":"2024-02-13","exploitedFirstSeen":"2024-02-13","ransomware":true,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2024-Feb","date":"2024-02-13"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21412","date":"2024-02-13"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2024-02-13"},{"url":"https://www.trendmicro.com/en_us/research/24/b/cve202421412-water-hydra-targets-traders-with-windows-defender-s.html","date":"2024-02-13"},{"url":"https://www.trendmicro.com/en_us/research/24/c/cve-2024-21412--darkgate-operators-exploit-microsoft-windows-sma.html","date":"2024-03-13"},{"url":"https://redalert.nshc.net/2024/04/22/monthly-threat-actor-group-intelligence-report-february-2024-eng/","date":"2024-04-22"},{"url":"https://www.mcafee.com/blogs/other-blogs/mcafee-labs/the-darkgate-menace-leveraging-autohotkey-attempt-to-evade-smartscreen/","date":"2024-04-29"},{"url":"https://decoded.avast.io/threatresearch/avast-q1-2024-threat-report/","date":"2024-05-14"},{"url":"https://www.trendmicro.com/en_us/research/24/f/behind-the-great-wall-void-arachne-targets-chinese-speaking-user.html","date":"2024-06-19"},{"url":"https://cyble.com/blog/increase-in-the-exploitation-of-microsoft-smartscreen-vulnerability-cve-2024-21412/","date":"2024-07-05"}],"evidenceTotal":34,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"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":"DragonForce Ransomware Profile: From Affiliate Program to Cybercrime Cartel","url":"https://otx.alienvault.com/pulse/6ad5aadd4dbef4abab5b9cd2","created":"2026-10-19"}],"provenance":"machine"},"cwes":[{"id":"CWE-693","name":"Protection Mechanism Failure"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21412","tags":["Patch","Vendor Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21412","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21412","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 malicious shortcut file to trigger bypass","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Internet Shortcut Files Security Feature Bypass Vulnerability","start":0,"end":61}],"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 security feature protection","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Internet Shortcut Files Security Feature Bypass Vulnerability","start":0,"end":61}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-5a19d25935b8a3592bea","title":"Deceptive Cracked Software Spreads Lumma Variant on YouTube","publisher":"fortinet.com","url":"https://www.fortinet.com/blog/threat-research/lumma-variant-on-youtube","date":"2024-01-08","mentions":[{"quote":"Also of Interest:What is Fortibleed?Deep Analysis: FormBook New Variant Delivered...YouTube Pirated Software Videos Deliver Triple...Exploiting CVE-2024-21412: A Stealer Campaign Unleashed","start":13145,"end":13333}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2024-19121","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-19121","exploited":true,"exploitedSince":"2024-02-13","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2024-03-21","earliestUrl":"https://github.com/lsr00ter/CVE-2024-21412_Water-Hydra","repos":[{"name":"lsr00ter/CVE-2024-21412_Water-Hydra","url":"https://github.com/lsr00ter/CVE-2024-21412_Water-Hydra","stars":8,"created":"2024-03-21"}]},"first":{"date":"2024-03-21","source":"PoC-in-GitHub","url":"https://github.com/lsr00ter/CVE-2024-21412_Water-Hydra"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.001"],"provenance":"ai"},{"stage":"primary","techniques":["T1553.005"],"provenance":"ai"}],"timeline":[{"date":"2024-01-08","kind":"report","label":"Named in fortinet.com: Deceptive Cracked Software Spreads Lumma Variant on 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