{"id":"CVE-2021-26398","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-26398","generatedAt":"2026-10-27T23:43:24.764Z","title":"Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential arbitrary code execution.","description":"Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential arbitrary code execution.\n\n","published":"2023-01-11T08:15:11.000Z","lastModified":"2026-06-17T03:43:19.000Z","status":"Modified","sourceIdentifier":"psirt@amd.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["amd/epyc 7h12 firmware","amd/epyc 7f72 firmware","amd/epyc 7f52 firmware","amd/epyc 7f32 firmware","amd/epyc 7742 firmware","amd/epyc 7702p firmware","amd/epyc 7702 firmware","amd/epyc 7662 firmware","amd/epyc 7642 firmware","amd/epyc 7552 firmware","amd/epyc 7542 firmware","amd/epyc 7532 firmware","amd/epyc 7502p firmware","amd/epyc 7502 firmware","amd/epyc 7452 firmware","amd/epyc 7402 firmware","amd/epyc 7402p firmware","amd/epyc 7352 firmware","amd/epyc 7302p firmware","amd/epyc 7302 firmware","amd/epyc 7282 firmware","amd/epyc 7272 firmware","amd/epyc 7262 firmware","amd/epyc 7252 firmware","amd/epyc 7232p firmware","amd/epyc 7002 firmware","amd/epyc 7003 firmware","amd/epyc 72f3 firmware","amd/epyc 7313 firmware","amd/epyc 7313p firmware","amd/epyc 7343 firmware","amd/epyc 7373x firmware","amd/epyc 73f3 firmware","amd/epyc 7413 firmware","amd/epyc 7443 firmware","amd/epyc 7443p firmware","amd/epyc 7453 firmware","amd/epyc 74f3 firmware","amd/epyc 7513 firmware","amd/epyc 7543 firmware","amd/epyc 7543p firmware","amd/epyc 7573x firmware","amd/epyc 75f3 firmware","amd/epyc 7643 firmware","amd/epyc 7663 firmware","amd/epyc 7713 firmware","amd/epyc 7713p firmware","amd/epyc 7743 firmware","amd/epyc 7763 firmware","amd/epyc 7773x firmware","amd/epyc 7001 firmware","amd/epyc 7251 firmware","amd/epyc 7261 firmware","amd/epyc 7281 firmware","amd/epyc 7301 firmware","amd/epyc 7351 firmware","amd/epyc 7371 firmware","amd/epyc 7401 firmware","amd/epyc 7401p firmware","amd/epyc 7451 firmware"],"epss":{"score":0.0022,"percentile":0.12473,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032","tags":["Vendor Advisory"],"source":"psirt@amd.com"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-26398","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}