{"id":"CVE-2021-46763","aliases":["EUVD-2021-33419","GHSA-4c6m-4p4p-3j5f"],"status":"published","title":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the...","description":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the intended bounds of a shared\nmemory buffer potentially leading to a loss of integrity.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00494,"percentile":0.42734,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2023-05-09T18:36:23Z","modified":"2026-06-17T04:15:29Z","products":[{"vendor":"amd","product":"2nd gen amd epyc™"},{"vendor":"amd","product":"3rd gen amd epyc™"},{"vendor":"amd","product":"epyc_7232p_firmware"},{"vendor":"amd","product":"epyc_7252_firmware"},{"vendor":"amd","product":"epyc_7262_firmware"},{"vendor":"amd","product":"epyc_7272_firmware"},{"vendor":"amd","product":"epyc_7282_firmware"},{"vendor":"amd","product":"epyc_72f3_firmware"},{"vendor":"amd","product":"epyc_7302_firmware"},{"vendor":"amd","product":"epyc_7302p_firmware"},{"vendor":"amd","product":"epyc_7313_firmware"},{"vendor":"amd","product":"epyc_7313p_firmware"},{"vendor":"amd","product":"epyc_7343_firmware"},{"vendor":"amd","product":"epyc_7352_firmware"},{"vendor":"amd","product":"epyc_7373x_firmware"},{"vendor":"amd","product":"epyc_73f3_firmware"},{"vendor":"amd","product":"epyc_7402_firmware"},{"vendor":"amd","product":"epyc_7402p_firmware"},{"vendor":"amd","product":"epyc_7413_firmware"},{"vendor":"amd","product":"epyc_7443_firmware"},{"vendor":"amd","product":"epyc_7443p_firmware"},{"vendor":"amd","product":"epyc_7452_firmware"},{"vendor":"amd","product":"epyc_7453_firmware"},{"vendor":"amd","product":"epyc_7473x_firmware"},{"vendor":"amd","product":"epyc_74f3_firmware"},{"vendor":"amd","product":"epyc_7502_firmware"},{"vendor":"amd","product":"epyc_7502p_firmware"},{"vendor":"amd","product":"epyc_7513_firmware"},{"vendor":"amd","product":"epyc_7532_firmware"},{"vendor":"amd","product":"epyc_7542_firmware"},{"vendor":"amd","product":"epyc_7543_firmware"},{"vendor":"amd","product":"epyc_7543p_firmware"},{"vendor":"amd","product":"epyc_7552_firmware"},{"vendor":"amd","product":"epyc_7573x_firmware"},{"vendor":"amd","product":"epyc_75f3_firmware"},{"vendor":"amd","product":"epyc_7642_firmware"},{"vendor":"amd","product":"epyc_7643_firmware"},{"vendor":"amd","product":"epyc_7662_firmware"},{"vendor":"amd","product":"epyc_7663_firmware"},{"vendor":"amd","product":"epyc_7702_firmware"},{"vendor":"amd","product":"epyc_7702p_firmware"},{"vendor":"amd","product":"epyc_7713_firmware"},{"vendor":"amd","product":"epyc_7713p_firmware"},{"vendor":"amd","product":"epyc_7742_firmware"},{"vendor":"amd","product":"epyc_7763_firmware"},{"vendor":"amd","product":"epyc_7773x_firmware"},{"vendor":"amd","product":"epyc_7f32_firmware"},{"vendor":"amd","product":"epyc_7f52_firmware"},{"vendor":"amd","product":"epyc_7f72_firmware"},{"vendor":"amd","product":"epyc_7h12_firmware"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46763"},{"url":"https://github.com/advisories/GHSA-4c6m-4p4p-3j5f"}],"sources":{"cve":[{"id":"CVE-2021-46763","description":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the intended bounds of a shared\nmemory buffer potentially leading to a loss of integrity.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T18:36:23.834Z","modified":"2025-01-28T16:00:03.817Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-33419","description":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the intended bounds of a shared\nmemory buffer potentially leading to a loss of integrity.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T18:36:23Z","modified":"2025-01-28T16:00:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:04:11.814906Z"}],"ghsa":[{"id":"GHSA-4c6m-4p4p-3j5f","title":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the...","description":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the intended bounds of a shared\nmemory buffer potentially leading to a loss of integrity.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T21:30:23Z","modified":"2024-04-04T03:57:32Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:56:20.113325Z"}],"nvd":[{"id":"CVE-2021-46763","description":"Insufficient input validation in the SMU may\nenable a privileged attacker to write beyond the intended bounds of a shared\nmemory buffer potentially leading to a loss of integrity.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T19:15:11.123Z","modified":"2026-06-17T04:15:29.11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}