{"cvss":7.8,"datePublished":"2025-10-06","dateUpdated":"2025-10-06","description":"Microsoft Windows Common Log File System Driver contains a privilege escalation vulnerability that could allow a local, privileged attacker to bypass certain security mechanisms.","dueDate":"2025-10-27","id":"CVE-2021-43226","kev_catalogs":["cisa"],"knownRansomwareCampaignUse":"Known","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43226 ; https://nvd.nist.gov/vuln/detail/CVE-2021-43226","product":"Windows","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","severity":"HIGH","source":"cisa_known_exploited","title":"Microsoft Windows Privilege Escalation Vulnerability","vendor":"Microsoft"}