{"cve":"CVE-2021-26391","nvd":{"published":"2022-11-09T21:15:12.150","modified":"2026-06-17T03:43:18.480","status":"Modified","description":"Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.","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:H","score":7.8},"cwes":["CWE-347"],"references":["https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1029","https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1029"],"products":["amd:enterprise_driver","amd:radeon_pro_software","amd:radeon_rx_vega_56_firmware","amd:radeon_rx_vega_64_firmware","amd:radeon_software","amd:ryzen_3_5300g_firmware","amd:ryzen_3_5300ge_firmware","amd:ryzen_3_5300u_firmware","amd:ryzen_3_5400u_firmware","amd:ryzen_5_5500u_firmware","amd:ryzen_5_5560u_firmware","amd:ryzen_5_5600g_firmware","amd:ryzen_5_5600ge_firmware","amd:ryzen_5_5600h_firmware","amd:ryzen_5_5600hs_firmware","amd:ryzen_5_5600u_firmware","amd:ryzen_7_5700g_firmware","amd:ryzen_7_5700ge_firmware","amd:ryzen_7_5700u_firmware","amd:ryzen_7_5800h_firmware","amd:ryzen_7_5800hs_firmware","amd:ryzen_7_5800u_firmware","amd:ryzen_9_5900hs_firmware","amd:ryzen_9_5900hx_firmware","amd:ryzen_9_5980hs_firmware","amd:ryzen_9_5980hx_firmware"],"source":"nvd","synced_at":"2026-10-19T21:37:08.729216836+00:00"},"epss":{"cve":"CVE-2021-26391","score":0.00181,"percentile":0.07654,"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."]}