{"id":"CVE-2021-26404","aliases":["EUVD-2021-13210","GHSA-m5wf-22jj-7772"],"status":"published","title":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes...","description":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0019,"percentile":0.08732,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2023-01-10T20:56:44Z","modified":"2026-06-17T03:43:20Z","products":[{"vendor":"amd","product":"3rd gen epyc"},{"vendor":"amd","product":"epyc_7003_firmware"},{"vendor":"amd","product":"epyc_7313_firmware"},{"vendor":"amd","product":"epyc_7313p_firmware"},{"vendor":"amd","product":"epyc_7343_firmware"},{"vendor":"amd","product":"epyc_7373x_firmware"},{"vendor":"amd","product":"epyc_73f3_firmware"},{"vendor":"amd","product":"epyc_7413_firmware"},{"vendor":"amd","product":"epyc_7443_firmware"},{"vendor":"amd","product":"epyc_7443p_firmware"},{"vendor":"amd","product":"epyc_7453_firmware"},{"vendor":"amd","product":"epyc_7473x_firmware"},{"vendor":"amd","product":"epyc_74f3_firmware"},{"vendor":"amd","product":"epyc_7513_firmware"},{"vendor":"amd","product":"epyc_7543_firmware"},{"vendor":"amd","product":"epyc_7543p_firmware"},{"vendor":"amd","product":"epyc_7573x_firmware"},{"vendor":"amd","product":"epyc_75f3_firmware"},{"vendor":"amd","product":"epyc_7643_firmware"},{"vendor":"amd","product":"epyc_7663_firmware"},{"vendor":"amd","product":"epyc_7713_firmware"},{"vendor":"amd","product":"epyc_7713p_firmware"},{"vendor":"amd","product":"epyc_7763_firmware"},{"vendor":"amd","product":"epyc_7773x_firmware"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26404"},{"url":"https://github.com/advisories/GHSA-m5wf-22jj-7772"}],"sources":{"cve":[{"id":"CVE-2021-26404","description":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\n","status":"published","published":"2023-01-10T20:56:44.456Z","modified":"2025-04-08T20:22:33.575Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13210","description":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\n","status":"published","published":"2023-01-10T20:56:44Z","modified":"2025-04-08T20:22:33Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:39.117101Z"}],"ghsa":[{"id":"GHSA-m5wf-22jj-7772","title":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes...","description":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.","status":"published","published":"2023-01-11T09:30:30Z","modified":"2023-02-03T05:04:13Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:30.880998Z"}],"nvd":[{"id":"CVE-2021-26404","description":"Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\n","status":"published","published":"2023-01-11T08:15:11.647Z","modified":"2026-06-17T03:43:20.4Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:07.323379Z"}]}}