{"id":"CVE-2023-31151","aliases":["EUVD-2023-35467","GHSA-vhfp-m358-h5g3"],"status":"published","title":"Improper Certificate Validation","description":"An Improper Certificate Validation vulnerability \n\nin the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface\n\ncould allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack.\nSee SEL Service Bulletin dated 2022-11-15 for more details.","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00246,"percentile":0.15971,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2023-05-10T19:21:30Z","modified":"2026-06-17T05:56:23Z","products":[{"vendor":"schweitzer engineering laboratories","product":"sel-2241 rtac module"},{"vendor":"schweitzer engineering laboratories","product":"sel-3350"},{"vendor":"schweitzer engineering laboratories","product":"sel-3505"},{"vendor":"schweitzer engineering laboratories","product":"sel-3505-3"},{"vendor":"schweitzer engineering laboratories","product":"sel-3530"},{"vendor":"schweitzer engineering laboratories","product":"sel-3530-4"},{"vendor":"schweitzer engineering laboratories","product":"sel-3532"},{"vendor":"schweitzer engineering laboratories","product":"sel-3555"},{"vendor":"schweitzer engineering laboratories","product":"sel-3560e"},{"vendor":"schweitzer engineering laboratories","product":"sel-3560s"},{"vendor":"selinc","product":"sel-2241_rtac_module_firmware"},{"vendor":"selinc","product":"sel-3350_firmware"},{"vendor":"selinc","product":"sel-3505-3_firmware"},{"vendor":"selinc","product":"sel-3505_firmware"},{"vendor":"selinc","product":"sel-3530-4_firmware"},{"vendor":"selinc","product":"sel-3530_firmware"},{"vendor":"selinc","product":"sel-3532_firmware"},{"vendor":"selinc","product":"sel-3555_firmware"},{"vendor":"selinc","product":"sel-3560e_firmware"},{"vendor":"selinc","product":"sel-3560s_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-2023-31151"},{"url":"https://selinc.com/support/security-notifications/external-reports"},{"url":"https://www.nozominetworks.com/blog"},{"url":"https://github.com/advisories/GHSA-vhfp-m358-h5g3"}],"sources":{"cve":[{"id":"CVE-2023-31151","title":"Improper Certificate Validation","description":"An Improper Certificate Validation vulnerability \n\nin the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface\n\ncould allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack.\nSee SEL Service Bulletin dated 2022-11-15 for more details.\n\n\n\n\n","status":"published","published":"2023-05-10T19:21:30.649Z","modified":"2025-01-24T19:04:04.464Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:35:27.430605Z"}],"euvd":[{"id":"EUVD-2023-35467","description":"An Improper Certificate Validation vulnerability \n\nin the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface\n\ncould allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack.\nSee SEL Service Bulletin dated 2022-11-15 for more details.\n\n\n\n\n","status":"published","published":"2023-05-10T19:21:30Z","modified":"2025-01-24T19:04:04Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:04:13.589007Z"}],"ghsa":[{"id":"GHSA-vhfp-m358-h5g3","title":"An Improper Certificate Validation vulnerability \n\nin the Schweitzer Engineering Laboratories...","description":"An Improper Certificate Validation vulnerability \n\nin the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface\n\ncould allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack.\nSee SEL Service Bulletin dated 2022-11-15 for more details.\n\n\n\n\n","status":"published","published":"2023-05-10T21:30:18Z","modified":"2024-04-04T04:01:40Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:56:20.636792Z"}],"nvd":[{"id":"CVE-2023-31151","description":"An Improper Certificate Validation vulnerability \n\nin the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface\n\ncould allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack.\nSee SEL Service Bulletin dated 2022-11-15 for more details.\n\n\n\n\n","status":"published","published":"2023-05-10T20:15:10.147Z","modified":"2026-06-17T05:56:23.76Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:08:01.131774Z"}]}}