{"id":"CVE-2026-73025","aliases":["EUVD-2026-73778","GHSA-72mw-w2p6-c2gv"],"status":"published","title":"Windows iSCSI Security Feature Bypass Vulnerability","description":"Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00901,"percentile":0.59953,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1390"],"published":"2026-09-08T17:18:08Z","modified":"2026-10-31T16:16:44Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"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 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_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_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73025","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73025"},{"url":"https://github.com/advisories/GHSA-72mw-w2p6-c2gv"}],"sources":{"cve":[{"id":"CVE-2026-73025","title":"Windows iSCSI Security Feature Bypass Vulnerability","description":"Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-09-08T17:18:08.633Z","modified":"2026-10-31T16:16:44.462Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T13:43:33.766176Z"}],"euvd":[{"id":"EUVD-2026-73778","description":"Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-09-08T17:18:08Z","modified":"2026-10-31T16:16:44Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T16:58:56.806292Z"}],"ghsa":[{"id":"GHSA-72mw-w2p6-c2gv","title":"Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature...","description":"Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-09-08T18:33:18Z","modified":"2026-09-08T18:33:44Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T15:11:33.442964Z"}],"nvd":[{"id":"CVE-2026-73025","description":"Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-09-08T18:20:32.49Z","modified":"2026-09-24T23:18:57.95Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}