{"id":"CVE-2021-46754","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-46754","generatedAt":"2026-10-27T17:44:58.656Z","title":"Insufficient input validation in the ASP (AMD Secure Processor) bootloader may allow an attacker with a compromised Uapp or ABL to coerce the bootloader into exposing sensitive information to the SMU (System Management Unit) resulting in a potential…","description":"Insufficient input validation in the ASP (AMD\nSecure Processor) bootloader may allow an attacker with a compromised Uapp or\nABL to coerce the bootloader into exposing sensitive information to the SMU\n(System Management Unit) resulting in a potential loss of confidentiality and\nintegrity.\n\n\n\n\n\n\n\n\n","published":"2023-05-09T20:15:12.000Z","lastModified":"2026-06-17T04:15:27.000Z","status":"Modified","sourceIdentifier":"psirt@amd.com","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-20"],"affected":["amd/ryzen 5300g firmware","amd/ryzen 5300ge firmware","amd/ryzen 5500 firmware","amd/ryzen 5600 firmware","amd/ryzen 5600g firmware","amd/ryzen 5600ge firmware","amd/ryzen 5600x firmware","amd/ryzen 5700g firmware","amd/ryzen 5700ge firmware","amd/ryzen 5700x firmware","amd/ryzen 5800 firmware","amd/ryzen 5800x3d firmware","amd/ryzen 5800x firmware","amd/ryzen 5900 firmware","amd/ryzen 5900x firmware","amd/ryzen 5945wx firmware","amd/ryzen 5950x firmware","amd/ryzen 5955wx firmware","amd/ryzen 5965wx firmware","amd/ryzen 5975wx firmware","amd/ryzen 5995wx firmware","amd/ryzen 3100 firmware","amd/ryzen 3300x firmware","amd/ryzen 3500 firmware","amd/ryzen 3500x firmware","amd/ryzen 3600 firmware","amd/ryzen 3600x firmware","amd/ryzen 3600xt firmware","amd/ryzen 3800x firmware","amd/ryzen 3800xt firmware","amd/ryzen 3900 firmware","amd/ryzen 3900x firmware","amd/ryzen 3900xt firmware","amd/ryzen 3950x firmware","amd/ryzen 1200 \\(af\\) firmware","amd/ryzen 1600 \\(af\\) firmware","amd/ryzen 2200g firmware","amd/ryzen 2200ge firmware","amd/ryzen 2300x firmware","amd/ryzen 2400g firmware","amd/ryzen 2400ge firmware","amd/ryzen 2500x firmware","amd/ryzen 2600 firmware","amd/ryzen 2600e firmware","amd/ryzen 2600x firmware","amd/ryzen 2700 firmware","amd/ryzen 2700e firmware","amd/ryzen 2700x firmware","amd/ryzen 2920x firmware","amd/ryzen 2950x firmware","amd/ryzen 2970wx firmware","amd/ryzen 2990wx firmware","amd/ryzen pro 2100ge firmware","amd/athlon gold 3150g firmware","amd/athlon gold 3150ge firmware","amd/athlon silver 3050ge firmware"],"epss":{"score":0.00565,"percentile":0.46681,"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 (0.56%). 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-4001","tags":["Vendor Advisory"],"source":"psirt@amd.com"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001","source":"psirt@amd.com"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-46754","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."}