CVE-2025-54771
Severity
4.9MEDIUM
EPSS
0.0%
top 91.57%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedNov 18
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 vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LExploitability: 1.4 | Impact: 3.4