{"id":"CVE-2025-62456","title":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","summary":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"microsoft","product":"windows_11_23h2","affected":["windows_11_23h2 < 10.0.22631.6345","windows_11_24h2 < 10.0.26100.7392","windows_11_25h2 < 10.0.26200.7392","windows_server_2022 < 10.0.20348.4467","windows_server_2022_23h2 < 10.0.25398.2025","windows_server_2025 < 10.0.26100.7392"],"patched":["windows_11_23h2 10.0.22631.6345","windows_11_24h2 10.0.26100.7392","windows_11_25h2 10.0.26200.7392","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":"2026-09-30","sourceUpdated":"2026-09-30T20:10:00.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-62456","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62456","label":"secure@microsoft.com"}],"tags":["nvd"],"epss":0.01105,"epssPercentile":0.64523,"ingestedAt":"2026-09-30T20:23:19.443Z","slug":"CVE-2025-62456","body":"## Overview\n\nHeap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.\n\n## Affected\n\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_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_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_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":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}