{"id":"CVE-2026-33843","aliases":["EUVD-2026-31519","GHSA-5gj2-5693-p684"],"status":"published","title":"Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability","description":"Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00473,"percentile":0.41359,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-288"],"published":"2026-05-22T22:03:10Z","modified":"2026-08-10T15:12:31Z","products":[{"vendor":"microsoft","product":"entra_id"},{"vendor":"microsoft","product":"microsoft entra"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33843","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33843"},{"url":"https://github.com/advisories/GHSA-5gj2-5693-p684"}],"sources":{"cve":[{"id":"CVE-2026-33843","title":"Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability","description":"Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-05-22T22:03:10.46Z","modified":"2026-08-10T15:12:31.55Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:20:08.009733Z"}],"euvd":[{"id":"EUVD-2026-31519","description":"Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-05-22T22:03:10Z","modified":"2026-08-10T15:12:31Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T18:02:02.865075Z"}],"ghsa":[{"id":"GHSA-5gj2-5693-p684","title":"Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C...","description":"Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-05-26T13:30:21Z","modified":"2026-05-26T13:30:30Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:08:16.245994Z"}],"nvd":[{"id":"CVE-2026-33843","description":"Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.","status":"published","published":"2026-05-22T23:16:44.163Z","modified":"2026-07-23T11:10:00.12Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:12:20.131508Z"}]}}