{"id":"CVE-2021-26366","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-26366","generatedAt":"2026-10-27T21:18:00.901Z","title":"An attacker, who gained elevated privileges via some other vulnerability, may be able to read data from Boot ROM resulting in a loss of system integrity.","description":"An attacker, who gained elevated privileges via some other vulnerability, may be able to read data from Boot ROM resulting in a loss of system integrity.","published":"2022-05-12T18:16:53.000Z","lastModified":"2026-06-17T03:43:15.000Z","status":"Modified","sourceIdentifier":"psirt@amd.com","cvss":{"version":"3.1","score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":[],"affected":["amd/radeon software","amd/athlon 3050ge firmware","amd/athlon 3150g firmware","amd/athlon 3150ge firmware","amd/ryzen 3 2200u firmware","amd/ryzen 3 2300u firmware","amd/ryzen 3 3100 firmware","amd/ryzen 3 3300g firmware","amd/ryzen 3 3300x firmware","amd/ryzen 3 5125c firmware","amd/ryzen 3 5400u firmware","amd/ryzen 3 5425c firmware","amd/ryzen 3 5425u firmware","amd/ryzen 5 2500u firmware","amd/ryzen 5 2600 firmware","amd/ryzen 5 2600h firmware","amd/ryzen 5 2600x firmware","amd/ryzen 5 3400g firmware","amd/ryzen 5 3450g firmware","amd/ryzen 5 3600 firmware","amd/ryzen 5 3600x firmware","amd/ryzen 5 5560u firmware","amd/ryzen 5 5600h firmware","amd/ryzen 5 5600hs firmware","amd/ryzen 5 5600u firmware","amd/ryzen 5 5600x firmware","amd/ryzen 5 5625c firmware","amd/ryzen 5 5625u firmware","amd/ryzen 5 5700g firmware","amd/ryzen 5 5700ge firmware","amd/ryzen 7 2700 firmware","amd/ryzen 7 2700u firmware","amd/ryzen 7 2700x firmware","amd/ryzen 7 2800h firmware","amd/ryzen 7 3700x firmware","amd/ryzen 7 3800x firmware","amd/ryzen 7 5800h firmware","amd/ryzen 7 5800hs firmware","amd/ryzen 7 5800u firmware","amd/ryzen 7 5825c firmware","amd/ryzen 7 5825u firmware","amd/ryzen 9 3900x firmware","amd/ryzen 9 3950x firmware","amd/ryzen 9 5900hs firmware","amd/ryzen 9 5900hx firmware","amd/ryzen 9 5980hs firmware","amd/ryzen 9 5980hx firmware","amd/ryzen threadripper 2920x firmware","amd/ryzen threadripper 2950x firmware","amd/ryzen threadripper 2970wx firmware","amd/ryzen threadripper 2990wx firmware","amd/ryzen threadripper 3960x firmware","amd/ryzen threadripper 3970x firmware","amd/ryzen threadripper 3990x firmware","amd/ryzen threadripper pro 3945wx firmware","amd/ryzen threadripper pro 3955wx firmware","amd/ryzen threadripper pro 3975wx firmware","amd/ryzen threadripper pro 3995wx firmware","amd/ryzen threadripper pro 5945wx firmware","amd/ryzen threadripper pro 5955wx firmware"],"epss":{"score":0.00239,"percentile":0.14867,"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 (0.24%). 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-1027","tags":["Vendor Advisory"],"source":"psirt@amd.com"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-26366","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."}