{"id":"CVE-2023-32049","published":"2023-07-11T18:15:13Z","modified":"2026-06-17T05:57:57Z","title":"Microsoft Windows Defender SmartScreen Security Feature Bypass Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"Windows SmartScreen Security Feature Bypass Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a security feature bypass in Microsoft Windows Defender SmartScreen, the Windows component that checks downloaded and launched content against reputation and malicious-content protections. An attacker who can get a user to interact with crafted content can bypass SmartScreen's protections, and the attack requires no privileges, network access, or authentication, but does depend on the user taking some action.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:36Z"},"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":0.04156,"percentile":0.90873,"date":"2026-10-31","provenance":"source"},"kev":{"dateAdded":"2023-07-11","dueDate":"2023-08-01","ransomware":false,"requiredAction":"Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-32049; https://nvd.nist.gov/vuln/detail/CVE-2023-32049","provenance":"source"},"vulncheckKev":{"dateAdded":"2023-07-11","exploitedFirstSeen":"2023-07-11","ransomware":false,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Jul","date":"2023-07-11"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-07-11"}],"evidenceTotal":2,"provenance":"source"},"exploited":true,"otx":null,"cwes":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32049","tags":["Patch","Vendor Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32049","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32049","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 indicates user interaction","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Windows SmartScreen Security Feature Bypass Vulnerability","start":0,"end":57}],"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 SmartScreen mark-of-the-web protections","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Windows SmartScreen Security Feature Bypass Vulnerability","start":0,"end":57}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-36336","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-36336","exploited":true,"exploitedSince":"2023-07-11","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1204.002"],"provenance":"ai"},{"stage":"primary","techniques":["T1553.005"],"provenance":"ai"}],"timeline":[{"date":"2023-07-11","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-32049","provenance":"source"},{"date":"2023-07-11","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Jul","provenance":"source"},{"date":"2023-07-11","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2023-07-11","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-36336","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":0},"priority":{"score":59.3,"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 1209 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":18.17,"detail":"percentile 0.9087"},{"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":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}