A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.
CVE-2024-45780
Score 6.7 from GitHub Security Advisory published 2025-03-03. NVD baseline CVSS 6.7; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.7
- EG Score
- 6.7(medium)
- EG Risk
- 30(Track)EG Risk 30/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity67% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 19%
- KEV
- Not listed
Published
March 3, 2025
Last Modified
June 29, 2026
Advisory Details (3)
Auto-updated Jun 25, 2026[SECURITY PATCH 00/73] GRUB2 vulnerabilities - 2025/02/18
https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html2345856 – (CVE-2024-45780) CVE-2024-45780 grub2: fs/tar: Integer Overflow causes Heap OOB Write
https://bugzilla.redhat.com/show_bug.cgi?id=2345856Vendor Advisories for CVE-2024-45780(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 39× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 109 total refreshes for this CVE.
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Frequently asked(5)
What is CVE-2024-45780?
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What is the CVSS score of CVE-2024-45780?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2024-45780
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