CVE-2025-54771
MEDIUM EPSS 2.8%
Published Nov 18, 20257mo ago · Modified Jun 17, 20261w ago
4.9 CVSS 3.1
Published Nov 18, 2025 7mo ago
Last Modified Jun 17, 2026 1w ago
Description
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low
Threat Intelligence
EPSS Exploit Probability
2.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-825
References 4
- openwall.com http://www.openwall.com/lists/oss-security/2025/11/18/3
- access.redhat.com https://access.redhat.com/security/cve/CVE-2025-54771
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2413823
- lists.gnu.org https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.