https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2023-40551.htmlhttps://patchthecve.com/cve/CVE-2023-40551.htmlWed, 17 Jun 2026 06:18:26 +0000MEDIUM 5.1: A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.https://patchthecve.com/cve/CVE-2023-40550.htmlhttps://patchthecve.com/cve/CVE-2023-40550.htmlWed, 17 Jun 2026 06:18:26 +0000MEDIUM 5.5: An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.https://patchthecve.com/cve/CVE-2023-40549.htmlhttps://patchthecve.com/cve/CVE-2023-40549.htmlWed, 17 Jun 2026 06:18:25 +0000MEDIUM 6.2: An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.https://patchthecve.com/cve/CVE-2023-40546.htmlhttps://patchthecve.com/cve/CVE-2023-40546.htmlWed, 17 Jun 2026 06:18:24 +0000MEDIUM 6.2: A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash uhttps://patchthecve.com/cve/CVE-2023-40548.htmlhttps://patchthecve.com/cve/CVE-2023-40548.htmlFri, 26 Jun 2026 10:16:22 +0000HIGH 7.4: A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw https://patchthecve.com/cve/CVE-2023-40547.htmlhttps://patchthecve.com/cve/CVE-2023-40547.htmlFri, 26 Jun 2026 10:16:21 +0000HIGH 8.3: A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete systehttps://patchthecve.com/cve/CVE-2022-28737.htmlhttps://patchthecve.com/cve/CVE-2022-28737.htmlWed, 17 Jun 2026 04:38:56 +0000MEDIUM 6.5: There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code ehttps://patchthecve.com/cve/CVE-2014-8399.htmlhttps://patchthecve.com/cve/CVE-2014-8399.htmlWed, 17 Jun 2026 00:16:41 +0000LOW 2.1: The default configuration in systemd-shim 8 enables the Abandon debugging clause, which allows local users to cause a denial of service via unspecified vectors.https://patchthecve.com/cve/CVE-2014-3677.htmlhttps://patchthecve.com/cve/CVE-2014-3677.htmlWed, 17 Jun 2026 00:08:44 +0000HIGH 7.5: Unspecified vulnerability in Shim might allow attackers to execute arbitrary code via a crafted MOK list, which triggers memory corruption.https://patchthecve.com/cve/CVE-2014-3676.htmlhttps://patchthecve.com/cve/CVE-2014-3676.htmlWed, 17 Jun 2026 00:08:44 +0000HIGH 7.5: Heap-based buffer overflow in Shim allows remote attackers to execute arbitrary code via a crafted IPv6 address, related to the "tftp:// DHCPv6 boot option."https://patchthecve.com/cve/CVE-2014-3675.htmlhttps://patchthecve.com/cve/CVE-2014-3675.htmlWed, 17 Jun 2026 00:08:43 +0000MEDIUM 5.0: Shim allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted DHCPv6 packet.