{"schema_version":"1","data":[{"id":3613,"advisory_id":"bc5fe31c-cd0c-47fc-82d1-5950fc2c31d6","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-34523","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:38:07.568697+00:00","extraction_method":"structured","technologies":["core-kev","exchange-server"],"cve_ids":["CVE-2021-34523"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Microsoft Exchange Server Privilege Escalation Vulnerability","summary":"Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2021-34523","products":[{"name":{"value":"Exchange Server","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-34523","aliases":["CVE-2021-34523"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-287"],"cveID":"CVE-2021-34523","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-34523","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 privilege escalation.","vulnerabilityName":"Microsoft Exchange Server Privilege Escalation Vulnerability","knownRansomwareCampaignUse":"Known"}},"related_cves":[{"value":"CVE-2021-34523","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3613,"next_before":3613}