{"id":"CVE-2026-69588","aliases":["EUVD-2026-73023","GHSA-h3jj-c6v2-c99r"],"status":"published","title":"Windows TCP/IP Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Windows TCP/IP 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":"2026-11-11","score":0.01174,"percentile":0.67938,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2026-09-08T17:11:48Z","modified":"2026-11-10T21:30:32Z","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 server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69588","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69588"},{"url":"https://github.com/advisories/GHSA-h3jj-c6v2-c99r"}],"sources":{"cve":[{"id":"CVE-2026-69588","title":"Windows TCP/IP Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:11:48.691Z","modified":"2026-11-10T21:30:32.715Z","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":"2026-11-10T22:48:53.006191Z"}],"euvd":[{"id":"EUVD-2026-73023","description":"Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:11:48Z","modified":"2026-11-10T21:30:32Z","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":"2026-11-10T22:23:53.507714Z"}],"ghsa":[{"id":"GHSA-h3jj-c6v2-c99r","title":"Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized...","description":"Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:32:47Z","modified":"2026-09-08T18:32:58Z","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":"2026-11-02T15:11:31.661331Z"}],"nvd":[{"id":"CVE-2026-69588","description":"Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:19:29.01Z","modified":"2026-09-18T14:35:08.23Z","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":"2026-11-02T14:12:44.840742Z"}]}}