{"id":"CVE-2026-0438","aliases":["EUVD-2026-30496","GHSA-783m-hm3h-gh75"],"status":"published","title":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM...","description":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.","severity":{"version":"4.0","score":5.4,"vector":"CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00139,"percentile":0.03265,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1072"],"published":"2026-05-15T01:41:25Z","modified":"2026-10-26T14:10:00Z","products":[{"vendor":"amd","product":"amd epyc™ 4004 series processors"},{"vendor":"amd","product":"amd epyc™ 4005 series processors"},{"vendor":"amd","product":"amd ryzen™ 7000 series desktop processors"},{"vendor":"amd","product":"amd ryzen™ 7000 series desktop processors (formerly codenamed \"raphael\")"},{"vendor":"amd","product":"amd ryzen™ 7040 series mobile processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 7045 series mobile processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 8000 series desktop processors"},{"vendor":"amd","product":"amd ryzen™ 8000 series desktop processors (formerly codenamed \"phoenix\")"},{"vendor":"amd","product":"amd ryzen™ 8040 series mobile processors with radeon™ graphics"},{"vendor":"amd","product":"amd ryzen™ 9000 series desktop processors"},{"vendor":"amd","product":"amd ryzen™ 9000 series desktop processors (formerly codenamed \"granite ridge\")"},{"vendor":"amd","product":"amd ryzen™ 9000hx series processors"},{"vendor":"amd","product":"amd ryzen™ ai 300 series processors"},{"vendor":"amd","product":"amd ryzen™ ai max 300 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded 7000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded 8000 series processors"},{"vendor":"amd","product":"amd ryzen™ embedded 9000 series processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ 7000  processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ 9000 processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ pro 7000 wx-series processors"},{"vendor":"amd","product":"amd ryzen™ threadripper™ pro 9000 wx-series processors"},{"vendor":"amd","product":"amd ryzen™ z1 series processors"},{"vendor":"amd","product":"amd ryzen™ z2 series processors"},{"vendor":"amd","product":"amd ryzen™ z2 series processors extreme"}],"references":[{"url":"https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html"},{"url":"https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0438"},{"url":"https://github.com/advisories/GHSA-783m-hm3h-gh75"}],"sources":{"cve":[{"id":"CVE-2026-0438","description":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.","status":"published","published":"2026-05-15T01:41:25.568Z","modified":"2026-05-19T21:01:36.151Z","cvss":[{"version":"4.0","score":5.4,"vector":"CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-1072"],"updated_at":"2026-11-02T14:20:13.962274Z"}],"euvd":[{"id":"EUVD-2026-30496","description":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.","status":"published","published":"2026-05-15T01:41:25Z","modified":"2026-05-19T21:01:36Z","cvss":[{"version":"4.0","score":5.4,"vector":"CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:21:15.217097Z"}],"ghsa":[{"id":"GHSA-783m-hm3h-gh75","title":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM...","description":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.","status":"published","published":"2026-05-15T03:30:36Z","modified":"2026-05-15T03:30:48Z","cvss":[{"version":"4.0","score":5.4,"vector":"CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-1072"],"updated_at":"2026-11-02T15:08:09.535348Z"}],"nvd":[{"id":"CVE-2026-0438","description":"A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.","status":"published","published":"2026-05-15T02:16:23.637Z","modified":"2026-10-26T14:10:00.13Z","cvss":[{"version":"4.0","score":5.4,"vector":"CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-1072"],"updated_at":"2026-11-02T14:12:19.39893Z"}]}}