{"id":"CVE-2025-62221","title":"Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.","summary":"Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"microsoft","product":"windows_10_1809","affected":["windows_10_1809 < 10.0.17763.8146","windows_10_21h2 < 10.0.19044.6691","windows_10_22h2 < 10.0.19045.6691","windows_11_23h2 < 10.0.22631.6345","windows_11_24h2 < 10.0.26100.7392","windows_11_25h2 < 10.0.26200.7392","windows_server_2019 < 10.0.17763.8146","windows_server_2022 < 10.0.20348.4467","windows_server_2022_23h2 < 10.0.25398.2025","windows_server_2025 < 10.0.26100.7392"],"patched":["windows_10_1809 10.0.17763.8146","windows_10_21h2 10.0.19044.6691","windows_10_22h2 10.0.19045.6691","windows_11_23h2 10.0.22631.6345","windows_11_24h2 10.0.26100.7392","windows_11_25h2 10.0.26200.7392","windows_server_2019 10.0.17763.8146","windows_server_2022 10.0.20348.4467","windows_server_2022_23h2 10.0.25398.2025","windows_server_2025 10.0.26100.7392"],"published":"2025-12-09","updated":"2026-09-25","sourceUpdated":"2026-09-25T23:10:00.463","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-62221","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62221","label":"secure@microsoft.com"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-62221","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild","exploit-available"],"epss":0.02505,"epssPercentile":0.84069,"kev":true,"kevDateAdded":"2025-12-09","kevDueDate":"2025-12-30","kevRansomware":false,"exploited":true,"exploits":{"github":1,"githubRepos":["https://github.com/Teodor1231241/DEMO-Proof-of-Concept-Temporal-Memory-Inconsistency-in-cldflt.sys-CVE-2025-62221"],"checkedAt":"2026-09-25T23:21:52.274Z"},"exploitAvailable":true,"zeroDay":true,"ingestedAt":"2026-09-25T23:21:16.903Z","slug":"CVE-2025-62221","body":"## Overview\n\nUse after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.\n\n## Affected\n\n- `windows_10_1809 < 10.0.17763.8146`\n- `windows_10_21h2 < 10.0.19044.6691`\n- `windows_10_22h2 < 10.0.19045.6691`\n- `windows_11_23h2 < 10.0.22631.6345`\n- `windows_11_24h2 < 10.0.26100.7392`\n- `windows_11_25h2 < 10.0.26200.7392`\n- `windows_server_2019 < 10.0.17763.8146`\n- `windows_server_2022 < 10.0.20348.4467`\n- `windows_server_2022_23h2 < 10.0.25398.2025`\n- `windows_server_2025 < 10.0.26100.7392`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_1809 10.0.17763.8146`\n- `windows_10_21h2 10.0.19044.6691`\n- `windows_10_22h2 10.0.19045.6691`\n- `windows_11_23h2 10.0.22631.6345`\n- `windows_11_24h2 10.0.26100.7392`\n- `windows_11_25h2 10.0.26200.7392`\n- `windows_server_2019 10.0.17763.8146`\n- `windows_server_2022 10.0.20348.4467`\n- `windows_server_2022_23h2 10.0.25398.2025`\n- `windows_server_2025 10.0.26100.7392`","depth":"abyssal","depthScore":68,"depthScoreParts":{"impact":42.9,"likelihood":0.5,"exploitation":25,"ransomware":0},"changes":[]}