CVE-2025-54771
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 4.9
- CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS probability
- 0.15%
- CWE
- CWE-825
- Published
- 2025-11-18
- Last modified
- 2026-09-01
Affected products
- GNU grub2
Weakness type
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