{"id":"CVE-2026-70240","aliases":["EUVD-2026-121594","GHSA-jwp4-9xg3-33mp"],"status":"published","title":"Windows Kerberos Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Windows Kerberos 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":0.01077,"percentile":0.65552,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2026-11-10T18:15:41Z","modified":"2026-11-10T21:34:03Z","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 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 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 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70240","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70240"},{"url":"https://github.com/advisories/GHSA-jwp4-9xg3-33mp"}],"sources":{"cve":[{"id":"CVE-2026-70240","title":"Windows Kerberos Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Windows Kerberos allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T18:15:41.443Z","modified":"2026-11-13T18:04:34.812Z","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-401"],"updated_at":"2026-11-10T19:39:59.74912Z"}],"euvd":[{"id":"EUVD-2026-121594","description":"Missing release of memory after effective lifetime in Windows Kerberos allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T18:15:41Z","modified":"2026-11-13T18:04:34Z","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":"2026-11-11T00:25:05.012422Z"}],"ghsa":[{"id":"GHSA-jwp4-9xg3-33mp","title":"Missing release of memory after effective lifetime in Windows Kerberos allows an unauthorized...","description":"Missing release of memory after effective lifetime in Windows Kerberos allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T21:33:55Z","modified":"2026-11-10T21:34:03Z","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"}],"cwes":["CWE-401"],"updated_at":"2026-11-10T21:57:55.411542Z"}],"nvd":[{"id":"CVE-2026-70240","description":"Missing release of memory after effective lifetime in Windows Kerberos allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-11-10T19:21:21.077Z","modified":"2026-11-11T02:17:15.523Z","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-401"],"updated_at":"2026-11-11T07:23:51.286099Z"}]}}