{"schema_version":"1","data":[{"id":3625,"advisory_id":"56fc1ee1-f0b0-4967-a9e7-9a954b3e6836","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-31207","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:38:14.512042+00:00","extraction_method":"structured","technologies":["core-kev","exchange-server"],"cve_ids":["CVE-2021-31207"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Microsoft Exchange Server Security Feature Bypass Vulnerability","summary":"Microsoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2021-31207","products":[{"name":{"value":"Exchange Server","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-31207","aliases":["CVE-2021-31207"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-20","CWE-434"],"cveID":"CVE-2021-31207","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-31207","dueDate":"2021-11-17","product":"Exchange Server","dateAdded":"2021-11-03","vendorProject":"Microsoft","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"Microsoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass.","vulnerabilityName":"Microsoft Exchange Server Security Feature Bypass Vulnerability","knownRansomwareCampaignUse":"Known"}},"related_cves":[{"value":"CVE-2021-31207","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3625,"next_before":3625}