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Vulnerability record · CVE-2024-45777 · published 19 February 2025

CVE-2024-45777: Gnu grub2 out-of-bounds write vulnerability

Gnu · Grub2

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.

6.7 CVSS 3.1 Medium EPSS 0.24% · top 86.0% CWE-787 · Out-of-bounds write
6.7CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
3References
29 Jun 2026Last modified by NVD

Description

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2025:20532
https://access.redhat.com/security/cve/CVE-2024-45777 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2346343 Issue TrackingThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-45777), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.