CVE-2024-45777

A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.

CVSS 3.1

6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2025-02-19

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• gnu:grub2
• redhat:enterprise_linux
• redhat:openshift

References

• https://access.redhat.com/errata/RHSA-2025:20532
• https://access.redhat.com/security/cve/CVE-2024-45777
• https://bugzilla.redhat.com/show_bug.cgi?id=2346343

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