{"id":"CVE-2024-29988","published":"2024-04-09T17:16:01Z","modified":"2026-06-17T07:23:30Z","title":"Microsoft SmartScreen Prompt Security Feature Bypass Vulnerability","vendor":"Microsoft","product":"SmartScreen Prompt","tier":"core","eol":null,"description":{"text":"SmartScreen Prompt Security Feature Bypass Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a security feature bypass in Microsoft's SmartScreen Prompt component, which is part of the SmartScreen product. An attacker can bypass the protection mechanism over the network with no privileges required, but a user must interact with the target (for example, by opening or acting on a crafted item) before the bypass takes effect.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:12:31Z"},"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":0.45151,"percentile":0.9878,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2024-04-30","dueDate":"2024-05-21","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-2024-29988; https://nvd.nist.gov/vuln/detail/CVE-2024-29988","provenance":"source"},"vulncheckKev":{"dateAdded":"2024-04-09","exploitedFirstSeen":"2024-04-09","ransomware":false,"evidence":[{"url":"https://www.zerodayinitiative.com/blog/2024/4/9/the-april-2024-security-updates-review","date":"2024-04-09"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2024-04-30"},{"url":"https://www.zerodayinitiative.com/blog/2024/8/14/cve-2024-38213-copy2pwn-exploit-evades-windows-web-protections","date":"2024-08-15"},{"url":"https://www.cert.europa.eu/publications/threat-intelligence/tlr2024/pdf","date":"2025-02-25"}],"evidenceTotal":4,"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":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-693","name":"Protection Mechanism Failure"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-29988","tags":["Patch","Vendor Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-29988","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-29988","tags":["US Government Resource"]}],"techniques":[{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: User must open malicious file; UI:R","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"SmartScreen Prompt Security Feature Bypass Vulnerability","start":0,"end":56}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2024-26960","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-26960","exploited":true,"exploitedSince":"2024-04-30","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2024-05-03","earliestUrl":"https://github.com/Sploitus/CVE-2024-29988-exploit","repos":[{"name":"Sploitus/CVE-2024-29988-exploit","url":"https://github.com/Sploitus/CVE-2024-29988-exploit","stars":7,"created":"2024-05-03"}]},"first":{"date":"2024-05-03","source":"PoC-in-GitHub","url":"https://github.com/Sploitus/CVE-2024-29988-exploit"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"ai"}],"timeline":[{"date":"2024-04-09","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-29988","provenance":"source"},{"date":"2024-04-09","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.zerodayinitiative.com/blog/2024/4/9/the-april-2024-security-updates-review","provenance":"source"},{"date":"2024-04-30","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2024-04-30","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-26960","provenance":"source"},{"date":"2024-05-03","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/Sploitus/CVE-2024-29988-exploit","provenance":"source"}],"speed":{"daysToPublicExploit":24,"firstExploitFrom":"PoC-in-GitHub","daysToKev":21},"priority":{"score":68.9,"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 934 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.76,"detail":"percentile 0.9878"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 PoC-in-GitHub repo"},{"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"}]}}