{"id":"CVE-2025-54982","aliases":["EUVD-2025-23602","GHSA-84x5-5f67-wjp4"],"status":"published","title":"SAML 2.0 Public Key Validation Issue","description":"An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.","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":0.00414,"percentile":0.3595,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2025-08-05T05:36:06Z","modified":"2026-06-17T09:41:03Z","products":[{"vendor":"zscaler","product":"authentication server"}],"references":[{"url":"https://help.zscaler.com/zia/about-identity-providers"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54982"},{"url":"https://github.com/advisories/GHSA-84x5-5f67-wjp4"}],"sources":{"cve":[{"id":"CVE-2025-54982","title":"SAML 2.0 Public Key Validation Issue","description":"An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.","status":"published","published":"2025-08-05T05:36:06.752Z","modified":"2026-02-26T17:49:58.538Z","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":"2026-11-02T14:32:27.603809Z"}],"euvd":[{"id":"EUVD-2025-23602","description":"An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.","status":"published","published":"2025-08-05T05:36:06Z","modified":"2026-02-26T17:49:58Z","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":"2026-11-02T19:48:19.878708Z"}],"ghsa":[{"id":"GHSA-84x5-5f67-wjp4","title":"An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on...","description":"An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.","status":"published","published":"2025-08-05T06:30:31Z","modified":"2025-08-05T06:30:37Z","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":"2026-11-02T15:03:10.73907Z"}],"nvd":[{"id":"CVE-2025-54982","description":"An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.","status":"published","published":"2025-08-05T06:15:26.437Z","modified":"2026-06-17T09:41:03.997Z","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"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:11:22.319351Z"}]}}