{"id":"CVE-2026-62873","aliases":["EUVD-2026-54326","GHSA-c89r-fxpx-x3w6"],"status":"published","title":"Microsoft 365 Admin Center Elevation of Privilege Vulnerability","description":"Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges 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":0.00606,"percentile":0.49287,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-08-06T22:37:47Z","modified":"2026-10-30T17:19:21Z","products":[{"vendor":"microsoft","product":"microsoft 365 admin center"},{"vendor":"microsoft","product":"windows_admin_center"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62873","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62873"},{"url":"https://github.com/advisories/GHSA-c89r-fxpx-x3w6"}],"sources":{"cve":[{"id":"CVE-2026-62873","title":"Microsoft 365 Admin Center Elevation of Privilege Vulnerability","description":"Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-06T22:37:47.045Z","modified":"2026-10-30T17:19:21.503Z","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-347"],"updated_at":"2026-11-02T14:20:14.999906Z"}],"euvd":[{"id":"EUVD-2026-54326","description":"Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-06T22:37:47Z","modified":"2026-10-30T17:19:21Z","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":"2026-11-02T16:59:05.130363Z"}],"ghsa":[{"id":"GHSA-c89r-fxpx-x3w6","title":"Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an...","description":"Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-07T00:31:23Z","modified":"2026-08-07T00:31:33Z","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-347"],"updated_at":"2026-11-02T15:10:11.041675Z"}],"nvd":[{"id":"CVE-2026-62873","description":"Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-08-07T00:16:36.35Z","modified":"2026-10-24T16:10:00.153Z","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-347"],"updated_at":"2026-11-02T14:12:35.386166Z"}]}}