{"id":"CVE-2026-33825","published":"2026-04-14T18:17:35Z","modified":"2026-07-24T22:10:00Z","title":"Microsoft Defender Insufficient Granularity of Access Control Vulnerability","vendor":"Microsoft","product":"Defender","tier":"core","eol":null,"description":{"text":"Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an insufficient granularity of access control in Microsoft Defender, a Microsoft product. 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https://nvd.nist.gov/vuln/detail/CVE-2026-33825","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-04-16","exploitedFirstSeen":"2026-04-16","ransomware":true,"evidence":[{"url":"https://x.com/HuntressLabs/status/2044882050314817880","date":"2026-04-16"},{"url":"https://www.huntress.com/blog/nightmare-eclipse-intrusion","date":"2026-04-20"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-04-22"},{"url":"https://www.guidepointsecurity.com/wp-content/uploads/2026/07/GRIT_Q2_2026_Ransomware__Cyber_Threat_Insights_Report.pdf","date":"2026-07-09"},{"url":"https://www.recordedfuture.com/blog/june-2026-cve-landscape","date":"2026-07-10"},{"url":"https://securelist.com/malware-report-q2-2026-pc-iot-statistics/120960/","date":"2026-08-10"}],"evidenceTotal":6,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 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2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"The Science of Exploitability: Decoding BlueHammer","url":"https://otx.alienvault.com/pulse/6ad8d885956829eafc1fa8d1","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"}],"provenance":"machine"},"cwes":[{"id":"CWE-1220","name":"Insufficient Granularity of Access Control"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33825","tags":["US Government Resource"]},{"url":"https://www.huntress.com/blog/nightmare-eclipse-intrusion","tags":["Third Party Advisory"]}],"techniques":[{"id":"T1078","name":"Valid 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