{"id":"CVE-2023-31176","aliases":["EUVD-2023-35492","GHSA-437p-76r5-9789"],"status":"published","title":"Insufficient entropy vulnerability could lead to authentication bypass","description":"An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication. \n\n\nSee product Instruction Manual Appendix A dated 20230830 for more details.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00927,"percentile":0.60794,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-331"],"published":"2023-11-30T16:53:11Z","modified":"2026-06-17T05:56:28Z","products":[{"vendor":"schweitzer engineering laboratories","product":"sel-451"},{"vendor":"selinc","product":"sel-451_firmware"}],"references":[{"url":"https://selinc.com/support/security-notifications/external-reports/","tags":["x_transferred","Vendor Advisory"]},{"url":"https://www.nozominetworks.com/blog/","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-31176"},{"url":"https://github.com/advisories/GHSA-437p-76r5-9789"}],"sources":{"cve":[{"id":"CVE-2023-31176","title":"Insufficient entropy vulnerability could lead to authentication bypass","description":"An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication. \n\n\nSee product Instruction Manual Appendix A dated 20230830 for more details.\n\n\n\n","status":"published","published":"2023-11-30T16:53:11.383Z","modified":"2024-10-16T19:21:05.142Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:35:27.430605Z"}],"euvd":[{"id":"EUVD-2023-35492","description":"An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication. \n\n\nSee product Instruction Manual Appendix A dated 20230830 for more details.\n\n\n\n","status":"published","published":"2023-11-30T16:53:11Z","modified":"2024-10-16T19:21:05Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:27:34.865484Z"}],"ghsa":[{"id":"GHSA-437p-76r5-9789","title":"An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could...","description":"An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication. \n\n\nSee product Instruction Manual Appendix A dated 20230830 for more details.\n\n\n\n","status":"published","published":"2023-11-30T18:31:18Z","modified":"2023-11-30T18:31:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:55:08.006495Z"}],"nvd":[{"id":"CVE-2023-31176","description":"An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication. \n\n\nSee product Instruction Manual Appendix A dated 20230830 for more details.\n\n\n\n","status":"published","published":"2023-11-30T17:15:08.52Z","modified":"2026-06-17T05:56:28.35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","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-331"],"updated_at":"2026-11-02T14:08:52.544469Z"}]}}