{"id":"CVE-2025-62567","aliases":["EUVD-2025-202211","GHSA-ccfp-87cw-c3rx"],"status":"published","title":"Windows Hyper-V Denial of Service Vulnerability","description":"Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01105,"percentile":0.66223,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191"],"published":"2025-12-09T17:56:03Z","modified":"2026-06-17T09:52:04Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h3"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62567","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62567"},{"url":"https://github.com/advisories/GHSA-ccfp-87cw-c3rx"}],"sources":{"cve":[{"id":"CVE-2025-62567","title":"Windows Hyper-V Denial of Service Vulnerability","description":"Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.","status":"published","published":"2025-12-09T17:56:03.534Z","modified":"2026-04-16T14:18:55.794Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T14:32:54.534202Z"}],"euvd":[{"id":"EUVD-2025-202211","description":"Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.","status":"published","published":"2025-12-09T17:56:03Z","modified":"2026-04-16T14:18:55Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T19:24:23.841547Z"}],"ghsa":[{"id":"GHSA-ccfp-87cw-c3rx","title":"Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny...","description":"Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.","status":"published","published":"2025-12-09T18:30:46Z","modified":"2025-12-09T18:30:47Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T15:05:06.989368Z"}],"nvd":[{"id":"CVE-2025-62567","description":"Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.","status":"published","published":"2025-12-09T18:16:02.827Z","modified":"2026-06-17T09:52:04.763Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T14:11:49.468427Z"}]}}