CVE-2025-0624 Information

Description

A flaw was found in grub2. During the network boot process when trying to search for the configuration file grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step it fails to consider the environment variable length when allocating the internal buffer resulting in an out-of-bounds write. If correctly exploited this issue may result in remote code execution through the same network segment grub is searching for the boot information which can be used to by-pass secure boot protections.

CVSS Vector

CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Reference

https://access.redhat.com/security/cve/CVE-2025-0624 https://bugzilla.redhat.com/show_bug.cgi?id=2346112

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.6