{"id":"CVE-2021-46764","aliases":["EUVD-2021-33420","GHSA-975m-88pr-xfj6"],"status":"published","title":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory...","description":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory locations within the ASP\npotentially resulting in a denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00626,"percentile":0.50372,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2023-05-09T18:36:24Z","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-2021-46764"},{"url":"https://github.com/advisories/GHSA-975m-88pr-xfj6"}],"sources":{"cve":[{"id":"CVE-2021-46764","description":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory locations within the ASP\npotentially resulting in a denial of service.\n\n\n\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T18:36:24.562Z","modified":"2025-01-28T15:59:14.778Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-33420","description":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory locations within the ASP\npotentially resulting in a denial of service.\n\n\n\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T18:36:24Z","modified":"2025-01-28T15:59:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:11.814906Z"}],"ghsa":[{"id":"GHSA-975m-88pr-xfj6","title":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory...","description":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory locations within the ASP\npotentially resulting in a denial of service.\n\n\n\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T21:30:23Z","modified":"2024-04-11T21:16:46Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:57:09.217628Z"}],"nvd":[{"id":"CVE-2021-46764","description":"Improper validation of DRAM addresses in SMU may\nallow an attacker to overwrite sensitive memory locations within the ASP\npotentially resulting in a denial of service.\n\n\n\n\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T19:15:11.16Z","modified":"2026-06-17T04:15:29.367Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","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:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}