{"id":"CVE-2023-31100","aliases":["EUVD-2023-35428","GHSA-h3cr-gxpm-fxxc"],"status":"published","title":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows...","description":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification.\nThis issue affects SecureCore™ Technology™ 4:\n\n\n  *  from 4.3.0.0 before 4.3.0.203\n  *  \n\nfrom \n\n4.3.1.0 before 4.3.1.163\n  *  \n\nfrom \n\n4.4.0.0 before 4.4.0.217\n  *  \n\nfrom \n\n4.5.0.0 before 4.5.0.138","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00189,"percentile":0.08618,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2023-11-14T23:17:07Z","modified":"2026-06-17T05:56:17Z","products":[{"vendor":"phoenix","product":"securecore™ technology™ 4"},{"vendor":"phoenixtech","product":"securecore_technology"}],"references":[{"url":"https://phoenixtech.com/phoenix-security-notifications/cve-2023-31100/","tags":["Vendor Advisory"]},{"url":"https://www.phoenix.com/security-notifications/","tags":["x_transferred","Not Applicable"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-31100"},{"url":"https://https://www.phoenix.com/security-notifications"},{"url":"https://phoenixtech.com/phoenix-security-notifications/cve-2023-31100"},{"url":"https://www.phoenix.com/security-notifications"},{"url":"https://github.com/advisories/GHSA-h3cr-gxpm-fxxc"}],"sources":{"cve":[{"id":"CVE-2023-31100","description":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification.\nThis issue affects SecureCore™ Technology™ 4:\n\n\n  *  from 4.3.0.0 before 4.3.0.203\n  *  \n\nfrom \n\n4.3.1.0 before 4.3.1.163\n  *  \n\nfrom \n\n4.4.0.0 before 4.4.0.217\n  *  \n\nfrom \n\n4.5.0.0 before 4.5.0.138","status":"published","published":"2023-11-14T23:17:07.869Z","modified":"2025-07-28T20:48:38.895Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:35:27.430605Z"}],"euvd":[{"id":"EUVD-2023-35428","description":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification.\nThis issue affects SecureCore™ Technology™ 4:\n\n\n  *  from 4.3.0.0 before 4.3.0.203\n  *  \n\nfrom \n\n4.3.1.0 before 4.3.1.163\n  *  \n\nfrom \n\n4.4.0.0 before 4.4.0.217\n  *  \n\nfrom \n\n4.5.0.0 before 4.5.0.138","status":"published","published":"2023-11-14T23:17:07Z","modified":"2025-07-28T20:48:38Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:32:03.359865Z"}],"ghsa":[{"id":"GHSA-h3cr-gxpm-fxxc","title":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows...","description":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification.\nThis issue affects SecureCore™ Technology™ 4:\n\n\n  *  from 4.3.0.0 before 4.3.0.203\n  *  \n\nfrom \n\n4.3.1.0 before 4.3.1.163\n  *  \n\nfrom \n\n4.4.0.0 before 4.4.0.217\n  *  \n\nfrom \n\n4.5.0.0 before 4.5.0.138","status":"published","published":"2023-11-15T00:31:08Z","modified":"2025-07-28T21:32:33Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:03:07.9296Z"}],"nvd":[{"id":"CVE-2023-31100","description":"Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification.\nThis issue affects SecureCore™ Technology™ 4:\n\n\n  *  from 4.3.0.0 before 4.3.0.203\n  *  \n\nfrom \n\n4.3.1.0 before 4.3.1.163\n  *  \n\nfrom \n\n4.4.0.0 before 4.4.0.217\n  *  \n\nfrom \n\n4.5.0.0 before 4.5.0.138","status":"published","published":"2023-11-15T00:15:07.573Z","modified":"2026-06-17T05:56:17.647Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:08:46.647045Z"}]}}