{"id":"CVE-2025-4421","aliases":["EUVD-2025-23143","GHSA-39h4-c5qq-2w56"],"status":"published","title":"EfiSmiServices: gEfiSmmCpuProtocol, SMM memory corruption vulnerabilities in SMM module","description":"The vulnerability was identified in the code developed specifically for Lenovo. Please visit \"Lenovo Product Security Advisories and Announcements\" webpage for more information about the vulnerability.  https://support.lenovo.com/us/en/product_security/home","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-13","score":0.00244,"percentile":0.15707,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2025-07-30T00:39:28Z","modified":"2026-06-17T09:33:13Z","products":[{"vendor":"insyde software","product":"insydeh2o"}],"references":[{"url":"https://www.insyde.com/security-pledge/sa-2025007/"},{"url":"https://support.lenovo.com/us/en/product_security/home"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-4421"},{"url":"https://www.insyde.com/security-pledge/sa-2025007"},{"url":"https://github.com/advisories/GHSA-39h4-c5qq-2w56"}],"sources":{"cve":[{"id":"CVE-2025-4421","title":"EfiSmiServices: gEfiSmmCpuProtocol, SMM memory corruption vulnerabilities in SMM module","description":"The vulnerability was identified in the code developed specifically for Lenovo. Please visit \"Lenovo Product Security Advisories and Announcements\" webpage for more information about the vulnerability.  https://support.lenovo.com/us/en/product_security/home","status":"published","published":"2025-07-30T00:39:28.366Z","modified":"2025-08-14T05:57:27.258Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:32:48.167635Z"}],"euvd":[{"id":"EUVD-2025-23143","description":"The vulnerability was identified in the code developed specifically for Lenovo. Please visit \"Lenovo Product Security Advisories and Announcements\" webpage for more information about the vulnerability.  https://support.lenovo.com/us/en/product_security/home","status":"published","published":"2025-07-30T00:39:28Z","modified":"2025-08-14T05:57:27Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:31:57.953552Z"}],"ghsa":[{"id":"GHSA-39h4-c5qq-2w56","title":"The vulnerability was identified in the code developed specifically for Lenovo. Please visit ...","description":"The vulnerability was identified in the code developed specifically for Lenovo. Please visit \"Lenovo Product Security Advisories and Announcements\" webpage for more information about the vulnerability.  https://support.lenovo.com/us/en/product_security/home","status":"published","published":"2025-07-30T03:30:35Z","modified":"2025-07-30T03:30:43Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:03:08.457948Z"}],"nvd":[{"id":"CVE-2025-4421","description":"The vulnerability was identified in the code developed specifically for Lenovo. Please visit \"Lenovo Product Security Advisories and Announcements\" webpage for more information about the vulnerability.  https://support.lenovo.com/us/en/product_security/home","status":"published","published":"2025-07-30T01:15:24.86Z","modified":"2026-06-17T09:33:13.23Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:11:21.71471Z"}]}}