{"schema_version":"1","data":[{"id":3605,"advisory_id":"fe30fea6-ca36-4b25-b021-5b6a37ecfc2c","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-31956","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:38:02.789937+00:00","extraction_method":"structured","technologies":["core-kev","windows"],"cve_ids":["CVE-2021-31956"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Microsoft Windows NTFS Privilege Escalation Vulnerability","summary":"Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2021-31956","products":[{"name":{"value":"Windows","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-31956","aliases":["CVE-2021-31956"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-191","CWE-787"],"cveID":"CVE-2021-31956","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-31956","dueDate":"2021-11-17","product":"Windows","dateAdded":"2021-11-03","vendorProject":"Microsoft","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.","vulnerabilityName":"Microsoft Windows NTFS Privilege Escalation Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2021-31956","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3605,"next_before":3605}