How severe is CVE-2024-45779?

CVE-2024-45779 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2024-45779 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45779?

CVE-2024-45779 affects Gnu Grub2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45779?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-45779 have an EU (EUVD) identifier?

Yes. CVE-2024-45779 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5594.

When was CVE-2024-45779 published?

CVE-2024-45779 was published on 2025-03-03 and last updated on 2026-06-29.

CVE-2024-45779

CVE-2024-45779 is a medium-severity vulnerability in Gnu Grub2 with a CVSS 3.x base score of 6.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.0)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5594
Weakness: CWE-190
Affected product: Gnu Grub2
Published: 2025-03-03
Last modified: 2026-06-29

Description

An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.

Frequently asked questions

What is CVE-2024-45779?: An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.
How severe is CVE-2024-45779?: CVE-2024-45779 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2024-45779 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45779?: CVE-2024-45779 affects Gnu Grub2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45779?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-45779 have an EU (EUVD) identifier?: Yes. CVE-2024-45779 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5594.
When was CVE-2024-45779 published?: CVE-2024-45779 was published on 2025-03-03 and last updated on 2026-06-29.

References

Affected products (1)

cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*

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Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

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CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

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