{"id":"CVE-2021-26386","aliases":["EUVD-2021-13192","GHSA-q5m8-56v3-xhv7"],"status":"published","title":"A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system...","description":"A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call to the Stage 2 Bootloader potentially leading to corrupt memory and code execution.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00279,"percentile":0.2062,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2022-05-12T18:28:38Z","modified":"2026-06-17T03:43:17Z","products":[{"vendor":"amd","product":"athlon™ 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series"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26386"},{"url":"https://github.com/advisories/GHSA-q5m8-56v3-xhv7"}],"sources":{"cve":[{"id":"CVE-2021-26386","description":"A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call to the Stage 2 Bootloader potentially leading to corrupt memory and code execution.","status":"published","published":"2022-05-12T18:28:38.025Z","modified":"2024-09-16T17:53:15.058Z","updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13192","description":"A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call to the Stage 2 Bootloader potentially leading to corrupt memory and code 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