{"id":"CVE-2023-28801","aliases":["EUVD-2023-32436","GHSA-wfp5-6m78-crh3"],"status":"published","title":"Improper SAML signature verification","description":"An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00391,"percentile":0.33461,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2023-08-31T13:53:11Z","modified":"2026-06-17T05:48:48Z","products":[{"vendor":"zscaler","product":"zia admin portal"},{"vendor":"zscaler","product":"zscaler_internet_access_admin_portal"}],"references":[{"url":"https://help.zscaler.com/zia/release-upgrade-summary-2023","tags":["x_transferred","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28801"},{"url":"https://github.com/advisories/GHSA-wfp5-6m78-crh3"}],"sources":{"cve":[{"id":"CVE-2023-28801","title":"Improper SAML signature verification","description":"An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.\n\n","status":"published","published":"2023-08-31T13:53:11.266Z","modified":"2024-10-01T17:51:21.271Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:35:32.376766Z"}],"euvd":[{"id":"EUVD-2023-32436","description":"An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.\n\n","status":"published","published":"2023-08-31T13:53:11Z","modified":"2024-10-01T17:51:21Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-03T00:27:59.918435Z"}],"ghsa":[{"id":"GHSA-wfp5-6m78-crh3","title":"An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler...","description":"An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.\n\n","status":"published","published":"2023-08-31T15:30:16Z","modified":"2024-04-04T07:20:25Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:56:50.398159Z"}],"nvd":[{"id":"CVE-2023-28801","description":"An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.\n\n","status":"published","published":"2023-08-31T14:15:08.42Z","modified":"2026-06-17T05:48:48.1Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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-347"],"updated_at":"2026-11-02T14:08:27.181588Z"}]}}