{"id":"CVE-2023-20520","aliases":["EUVD-2023-24699","GHSA-wmqm-rr3q-7g8h"],"status":"published","title":"Improper access control settings in ASP\nBootloader may allow an attacker to corrupt the return...","description":"Improper access control settings in ASP\nBootloader may allow an attacker to corrupt the return address causing a\nstack-based buffer overrun potentially leading to arbitrary code execution.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00789,"percentile":0.56725,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2023-05-09T18:36:29Z","modified":"2026-06-17T05:30:14Z","products":[{"vendor":"amd","product":"1st gen amd epyc™"},{"vendor":"amd","product":"2nd gen amd epyc™"},{"vendor":"amd","product":"3rd gen amd 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Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20520"},{"url":"https://github.com/advisories/GHSA-wmqm-rr3q-7g8h"}],"sources":{"cve":[{"id":"CVE-2023-20520","description":"Improper access control settings in ASP\nBootloader may allow an attacker to corrupt the return address causing a\nstack-based buffer overrun potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T18:36:29.141Z","modified":"2025-01-28T15:54:22.503Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:13.912858Z"}],"euvd":[{"id":"EUVD-2023-24699","description":"Improper access control settings in ASP\nBootloader may allow an attacker to corrupt the return address causing a\nstack-based buffer overrun potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T18:36:29Z","modified":"2025-01-28T15:54:22Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:04:11.814906Z"}],"ghsa":[{"id":"GHSA-wmqm-rr3q-7g8h","title":"Improper access control settings in ASP\nBootloader may allow an attacker to corrupt the return...","description":"Improper access control settings in ASP\nBootloader may allow an attacker to corrupt the return address causing a\nstack-based buffer overrun potentially leading to arbitrary code execution.\n\n\n\n\n\n\n\n","status":"published","published":"2023-05-09T21:30:23Z","modified":"2024-04-04T03:57:41Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:56:20.113325Z"}],"nvd":[{"id":"CVE-2023-20520","description":"Improper access control settings in 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