{"id":"CVE-2023-48733","details":"An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.","modified":"2026-08-12T03:51:26.826483264Z","published":"2024-02-14T21:54:08.333Z","related":["openSUSE-SU-2024:13807-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"fixed":"2023.05-2ubuntu0.1"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"canonical","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/48xxx/CVE-2023-48733.json"},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/48xxx/CVE-2023-48733.json"},{"type":"REPORT","url":"https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137"},{"type":"REPORT","url":"https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139"},{"type":"REPORT","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-48733"},{"type":"ARTICLE","url":"https://www.openwall.com/lists/oss-security/2024/02/14/4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/canonical/lxd","events":[{"introduced":"1e1349e3cbf30c1b2ce74e531d4dd0fd52c45be1"},{"last_affected":"761d134ceabd306f57acfb0ca51f59b03751a5b0"}],"database_specific":{"extracted_events":[{"introduced":"5.0-candidate"},{"last_affected":"5.0-candidate"},{"introduced":"5.21-candidate"},{"last_affected":"5.21-candidate"},{"introduced":"5.21-edge"},{"last_affected":"5.21-edge"}],"source":"CPE_STRING","cpe":["cpe:2.3:a:canonical:lxd:5.0:candidate:*:*:*:*:*:*","cpe:2.3:a:canonical:lxd:5.21:candidate:*:*:*:*:*:*","cpe:2.3:a:canonical:lxd:5.21:edge:*:*:*:*:*:*"]}}],"versions":["5.0-candidate","5.21-candidate","v5.21.0","lxd-5.21.0","lxd-5.17","lxd-5.16","lxd-5.15","lxd-5.14","lxd-5.13","lxd-5.12","lxd-5.11","lxd-5.10","lxd-5.9","lxd-5.8","lxd-5.7","lxd-5.6","lxd-5.5","lxd-5.4","lxd-5.3","lxd-5.2","lxd-5.1","lxd-5.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-48733.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}