{"cve":"CVE-2021-26408","nvd":{"published":"2022-05-10T19:15:08.920","modified":"2026-06-17T03:43:20.957","status":"Modified","description":"Insufficient validation of elliptic curve points in SEV-legacy firmware may compromise SEV-legacy guest migration potentially resulting in loss of guest's integrity or confidentiality.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":7.1},"cwes":[],"references":["https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021","https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021"],"products":["amd:epyc_7001_firmware","amd:epyc_7002_firmware","amd:epyc_7232p_firmware","amd:epyc_7251_firmware","amd:epyc_7252_firmware","amd:epyc_7262_firmware","amd:epyc_7272_firmware","amd:epyc_7281_firmware","amd:epyc_7282_firmware","amd:epyc_7301_firmware","amd:epyc_7302_firmware","amd:epyc_7302p_firmware","amd:epyc_7351_firmware","amd:epyc_7351p_firmware","amd:epyc_7352_firmware","amd:epyc_7401_firmware","amd:epyc_7401p_firmware","amd:epyc_7402_firmware","amd:epyc_7402p_firmware","amd:epyc_7451_firmware","amd:epyc_7452_firmware","amd:epyc_7501_firmware","amd:epyc_7502_firmware","amd:epyc_7502p_firmware","amd:epyc_7532_firmware","amd:epyc_7542_firmware","amd:epyc_7551_firmware","amd:epyc_7551p_firmware","amd:epyc_7552_firmware","amd:epyc_7601_firmware","amd:epyc_7642_firmware","amd:epyc_7662_firmware","amd:epyc_7702_firmware","amd:epyc_7702p_firmware","amd:epyc_7742_firmware","amd:epyc_7f32_firmware","amd:epyc_7f52_firmware","amd:epyc_7f72_firmware"],"source":"nvd","synced_at":"2026-10-19T21:31:59.322382750+00:00"},"epss":{"cve":"CVE-2021-26408","score":0.00269,"percentile":0.19168,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}