{"id":"CVE-2026-105512","aliases":["EUVD-2026-122015"],"status":"published","title":"Microsoft QUIC Denial of Service Vulnerability","description":"Integer underflow (wrap or wraparound) in Microsoft QUIC allows an unauthorized attacker to deny service over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.01359,"percentile":0.7215,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191"],"published":"2026-11-10T18:19:36Z","modified":"2026-11-10T18:19:36Z","products":[{"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 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105512","tags":["vendor-advisory","patch"]}],"sources":{"cve":[{"id":"CVE-2026-105512","title":"Microsoft QUIC Denial of Service Vulnerability","description":"Integer underflow (wrap or wraparound) in Microsoft QUIC allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T18:19:36.084Z","modified":"2026-11-13T18:08:26.547Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-191"],"updated_at":"2026-11-10T19:39:57.855077Z"}],"euvd":[{"id":"EUVD-2026-122015","description":"Integer underflow (wrap or wraparound) in Microsoft QUIC allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T18:19:36Z","modified":"2026-11-13T18:08:26Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T19:22:09.875535Z"}],"nvd":[{"id":"CVE-2026-105512","description":"Integer underflow (wrap or wraparound) in Microsoft QUIC allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T19:17:50.283Z","modified":"2026-11-10T22:18:14.417Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-191"],"updated_at":"2026-11-11T00:21:53.860815Z"}]}}