{"id":"CVE-2025-64661","title":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.","summary":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-362"],"vendor":"microsoft","product":"windows_10_1607","affected":["windows_10_1607 < 10.0.14393.8688","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_2016 < 10.0.14393.8688","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_1607 10.0.14393.8688","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_2016 10.0.14393.8688","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-2025-64661","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64661","label":"secure@microsoft.com"}],"tags":["nvd"],"epss":0.0025,"epssPercentile":0.14559,"ingestedAt":"2026-09-25T23:21:16.905Z","slug":"CVE-2025-64661","body":"## Overview\n\nConcurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.\n\n## Affected\n\n- `windows_10_1607 < 10.0.14393.8688`\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_2016 < 10.0.14393.8688`\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_1607 10.0.14393.8688`\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_2016 10.0.14393.8688`\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":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}