CVE-2025-0690
MEDIUM EPSS 47.5%
Published Feb 24, 20251y ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Published Feb 24, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
Description
The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H Attack Vector Physical
Attack Complexity Low
Privileges Required High
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
47.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-787 Out-of-bounds Write Memory Safety
References 4
- access.redhat.com https://access.redhat.com/errata/RHSA-2025:6990
- access.redhat.com https://access.redhat.com/security/cve/CVE-2025-0690
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2346123
- lists.gnu.org https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.