{"id":"CVE-2025-62458","title":"Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.","summary":"Heap-based buffer overflow in Windows Win32K - GRFX 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-122"],"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_server_2008 = r2","windows_server_2012","windows_server_2012 = r2","windows_server_2016 < 10.0.14393.8688","windows_server_2019 < 10.0.17763.8146","windows_server_2022 < 10.0.20348.4467"],"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_server_2016 10.0.14393.8688","windows_server_2019 10.0.17763.8146","windows_server_2022 10.0.20348.4467"],"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-2025-62458","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62458","label":"secure@microsoft.com"}],"tags":["nvd"],"epss":0.00657,"epssPercentile":0.49549,"ingestedAt":"2026-09-30T20:23:19.444Z","slug":"CVE-2025-62458","body":"## Overview\n\nHeap-based buffer overflow in Windows Win32K - GRFX 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_server_2008 = r2`\n- `windows_server_2012`\n- `windows_server_2012 = r2`\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\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_server_2016 10.0.14393.8688`\n- `windows_server_2019 10.0.17763.8146`\n- `windows_server_2022 10.0.20348.4467`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}