{"cve":"CVE-2021-26327","nvd":{"published":"2021-11-16T19:15:07.987","modified":"2026-06-17T03:43:07.683","status":"Modified","description":"Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest 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:N/A:N","score":5.5},"cwes":["CWE-668","CWE-20"],"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_7003_firmware","amd:epyc_72f3_firmware","amd:epyc_7313_firmware","amd:epyc_7313p_firmware","amd:epyc_7343_firmware","amd:epyc_73f3_firmware","amd:epyc_7413_firmware","amd:epyc_7443_firmware","amd:epyc_7443p_firmware","amd:epyc_7453_firmware","amd:epyc_74f3_firmware","amd:epyc_7513_firmware","amd:epyc_7543_firmware","amd:epyc_7543p_firmware","amd:epyc_75f3_firmware","amd:epyc_7643_firmware","amd:epyc_7663_firmware","amd:epyc_7713_firmware","amd:epyc_7713p_firmware","amd:epyc_7763_firmware"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-26327","score":0.0024,"percentile":0.15203,"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."]}