{"id":"CVE-2026-118154","aliases":["EUVD-2026-122245","GHSA-gc6f-jf56-4wxq"],"status":"published","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.01035,"percentile":0.64402,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-807"],"published":"2026-11-10T18:21:48Z","modified":"2026-11-10T21:33:05Z","products":[{"vendor":"microsoft","product":"microsoft exchange server subscription edition rtm"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118154","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118154"},{"url":"https://github.com/advisories/GHSA-gc6f-jf56-4wxq"}],"sources":{"cve":[{"id":"CVE-2026-118154","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-11-10T18:21:48.312Z","modified":"2026-11-13T18:10:31.393Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-807"],"updated_at":"2026-11-10T19:39:58.44836Z"}],"euvd":[{"id":"EUVD-2026-122245","description":"Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-11-10T18:21:48Z","modified":"2026-11-13T18:10:31Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:33.654843Z"}],"ghsa":[{"id":"GHSA-gc6f-jf56-4wxq","title":"Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an...","description":"Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-11-10T21:33:00Z","modified":"2026-11-10T21:33:05Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-807"],"updated_at":"2026-11-10T21:57:52.038337Z"}],"nvd":[{"id":"CVE-2026-118154","description":"Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","status":"published","published":"2026-11-10T19:19:37.34Z","modified":"2026-11-10T20:18:15.027Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-807"],"updated_at":"2026-11-10T22:21:32.984056Z"}]}}