CVE Tools
Sign in

CVE-2025-61664

Grub2: missing unregister call for normal_exit command may lead to use-after-free

Published: Nov 18, 2025Updated: May 19, 2026 Sources: CVE List NVD BDUCWE-825
NVD MITRE
4.9CVSSMEDIUM
EPSS Score
0.1%
Top 97.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:LAC:HPR:NUI:NS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-825

Affected Products

grub2GNUOSS Libraries
Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9Red Hat
On-premOS
Operating Systems / linux-distro
gnuoss-projectUSOSS Librariesaka g. nu
red hatcommercialUSOperating Systemsaka red hat
and 7 more affected products View all →

Exploitability

Official Patch Available
Workaround Available

References

https://access.redhat.com/security/cve/CVE-2025-61664
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2414685
bugzilla.redhat.com
https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
lists.gnu.org
and 6 more references View all →

Timeline

Published
Nov 18, 2025
Last Updated
May 19, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-61664 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows