{"id":"CVE-2021-46795","state":"PUBLISHED","title":"A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially re","description":"A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.","publishedAt":"2023-01-10T20:53:25.868Z","updatedAt":"2025-04-09T15:13:26.855Z","severity":{"score":4.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"AMD","products":[" AMD Ryzen 5000 Series"," AMD Ryzen 3000 Series "],"affected":[{"vendor":" AMD","product":"Ryzen 5000 Series","packageName":"AGESA","defaultStatus":"affected","versions":[{"version":"various ","status":"affected"}],"platforms":["x86"]},{"vendor":" AMD","product":"Ryzen 3000 Series ","packageName":"AGESA","defaultStatus":"unaffected","versions":[{"version":"various ","status":"affected"}],"platforms":["x86"]}],"references":["https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"],"weaknesses":["CWE-367"],"ingestedAt":"2026-10-29T19:49:16.371Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/46xxx/CVE-2021-46795.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-46795","state":"PUBLISHED","datePublished":"2023-01-10T20:53:25.868Z","dateUpdated":"2025-04-09T15:13:26.855Z","assignerShortName":"AMD","assignerOrgId":"b58fc414-a1e4-4f92-9d70-1add41838648","dateReserved":"2022-05-04T18:14:06.438Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service."}],"affected":[{"vendor":" AMD","product":"Ryzen 5000 Series","packageName":"AGESA","defaultStatus":"affected","versions":[{"version":"various ","status":"affected"}],"platforms":["x86"]},{"vendor":" AMD","product":"Ryzen 3000 Series ","packageName":"AGESA","defaultStatus":"unaffected","versions":[{"version":"various ","status":"affected"}],"platforms":["x86"]}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"AMD","orgId":"b58fc414-a1e4-4f92-9d70-1add41838648","dateUpdated":"2023-01-11T07:01:59.843Z"},"datePublic":"2023-01-10T17:30:00.000Z","source":{"advisory":"AMD-SB-1031","discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:17:42.312Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.7,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-09T15:13:22.667024Z","id":"CVE-2021-46795","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","type":"CWE","lang":"en","description":"CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-09T15:13:26.855Z"}}]}}}