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CVE-2022-34303

shim: 3rd party shim allow secure boot bypass

A flaw was found in Eurosoft bootloaders before 2022-06-01. An attacker may use this bootloader to bypass or tamper with Secure Boot protections. In order to load and execute arbitrary code in the pre-boot stage, an attacker simply needs to replace the existing signed bootloader currently in use with this bootloader. Access to the EFI System Partition is required for booting using external media.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Eurosoft-uk Microsoft Redhat
Products
Uefi Bootloader Windows 10 Windows 11 and 7 more
CVE-2022-34302

shim: 3rd party shim allow secure boot bypass

A flaw was found in New Horizon Datasys bootloaders before 2022-06-01. An attacker may use this bootloader to bypass or tamper with Secure Boot protections. In order to load and execute arbitrary code in the pre-boot stage, an attacker simply needs to replace the existing signed bootloader currently in use with this bootloader. Access to the EFI System Partition is required for booting using external media.

CVSS 3.1 · 6.7 Medium EPSS 1.1% KEV · Not listed
Vendors
Horizondatasys Microsoft Redhat
Products
Uefi Bootloader Windows 10 Windows 11 and 7 more