CVE-2023-40547: The Critical Shim Flaw Compromising Linux Bootloaders Vulnerability CVE-2023-40547: The Critical Shim Flaw Compromising Linux Bootloaders Do Son January 25, 2024 0 Identified with a CVSS score of 8.3, CVE-2023-40547 exposes a remote code execution vulnerability within Shim.