---
id: CVE-2025-61664
title: >-
  A vulnerability in the GRUB2 bootloader has been identified in the normal
  module
summary: >-
  A vulnerability in the GRUB2 bootloader has been identified in the normal
  module. This flaw, a memory Use After Free issue, occurs because the
  normal_exit command is not properly unregistered when its related module is
  unloaded. An attac…
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-825
published: '2025-11-18'
updated: '2026-06-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-61664'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2025-61664'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2414685'
    label: secalert@redhat.com
  - url: 'https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.0014
epssPercentile: 0.03727
ingestedAt: '2026-06-29T13:24:34.609Z'
---

## Overview

A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.