CVE-2024-45782: gnu grub2 Out-of-bounds Write
Vulnerability summary
CVE-2024-45782 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in gnu grub2. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 9 · Related 9Timeline
- 03-03-2025PublishedVulnerability first disclosed.
- 29-06-2026Last modifiedVulnerability information updated.
Description
A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
0.00 pp
From 0.22% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu3 products
- grub2All versions (No fix recorded)
- grub2-signedAll versions (No fix recorded)
- grub2-unsignedAll versions (No fix recorded)
Redhat2 products
- enterprise_linuxEOL7.0 | 8.0 | 9.0
- openshift_container_platform4.0
Debian1 product
- grub2< 2.06-13+deb12u2 | < 2.12-6
Gnu1 product
- grub2≤ 2.12
4 vendors · 7 products
