{"id":"CVE-2021-26327","aliases":["EUVD-2021-13133","GHSA-qg7x-g66q-6pmh"],"status":"published","title":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of...","description":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.","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":0.0024,"percentile":0.15281,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-668"],"published":"2021-11-16T18:18:25Z","modified":"2026-06-17T03:43:07Z","products":[{"vendor":"amd","product":"3rd gen amd epyc™"},{"vendor":"amd","product":"epyc_7003_firmware"},{"vendor":"amd","product":"epyc_72f3_firmware"},{"vendor":"amd","product":"epyc_7313_firmware"},{"vendor":"amd","product":"epyc_7313p_firmware"},{"vendor":"amd","product":"epyc_7343_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_74f3_firmware"},{"vendor":"amd","product":"epyc_7513_firmware"},{"vendor":"amd","product":"epyc_7543_firmware"},{"vendor":"amd","product":"epyc_7543p_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"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26327"},{"url":"https://github.com/advisories/GHSA-qg7x-g66q-6pmh"}],"sources":{"cve":[{"id":"CVE-2021-26327","description":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.","status":"published","published":"2021-11-16T18:18:25.899Z","modified":"2024-09-17T02:42:07.509Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13133","description":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.","status":"published","published":"2021-11-16T18:18:25Z","modified":"2024-09-17T02:42:07Z","updated_at":"2026-11-03T00:28:38.264635Z"}],"ghsa":[{"id":"GHSA-qg7x-g66q-6pmh","title":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of...","description":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.","status":"published","published":"2021-11-17T19:13:02Z","modified":"2023-02-01T05:06:27Z","cwes":["CWE-668"],"updated_at":"2026-11-02T14:50:21.264393Z"}],"nvd":[{"id":"CVE-2021-26327","description":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.","status":"published","published":"2021-11-16T19:15:07.987Z","modified":"2026-06-17T03:43:07.683Z","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":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-20","CWE-668"],"updated_at":"2026-11-02T14:07:01.428028Z"}]}}