CVE-2023-4001

CVE-2023-4001 · Grub2: bypass the grub password protection feature

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.

CVSS 6.8 · Medium · EPSS 0.5%

Published

2024-01-15T11:10:19.517Z

Updated

2025-11-20T19:52:00.512Z

Stack: system

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