Medium 4.9Published Nov 18, 2025

CVE-2025-54771Grub2: use-after-free in grub_file_close()

Updated under an hour ago (Oct 28, 2026, 11:23 AM ET)

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It affects GNU grub2 and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for GNU grub2

Exploited in the last 30 days

A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.

CVSS: 4.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-825
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Deferred
Record last updated: Sep 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

GNU grub2 gnu:grub2 (from the name)	through 2.14	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift	4	CNA record

References

References

https://access.redhat.com/security/cve/CVE-2025-54771	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2413823	issue-tracking, x-refsource-redhat
https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
http://www.openwall.com/lists/oss-security/2025/11/18/3

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.