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CVE-2024-45779

22
FAUCET Score

CVE-2024-45779 is an integer overflow vulnerability in the grub2 BFS file system driver. It allows a specially crafted or corrupted BFS filesystem to cause a heap out-of-bounds read when grub2 attempts to read a file with an indirect extent map, affecting gnu grub2. The vulnerability has a CVSS score of 6.0 (Medium), indicating a local attack vector with low attack complexity, requiring high privileges to exploit, and potentially leading to sensitive data leakage or a system crash. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.12CPE matchmatch criteria
cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
19.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 66th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

microsoftpatch availablevia msrc
Product: 19588-17084Fixed in: 2.06-25
microsoftpatch availablevia msrc
Product: 20560-17084Fixed in: 2.06-25
microsoftpatch availablevia msrc
Product: 20107-17086Fixed in: 2.06-15
microsoftpatch availablevia msrc
Product: 20521-17086Fixed in: 2.06-15
microsoftpatch availablevia msrc
Product: azl3 grub2 2.06-24 on Azure Linux 3.0Fixed in: 2.06-25
microsoftpatch availablevia msrc
Product: azl3 grub2 2.06-25 on Azure Linux 3.0Fixed in: 2.06-25
microsoftpatch availablevia msrc
Product: cbl2 grub2 2.06-14 on CBL Mariner 2.0Fixed in: 2.06-15
microsoftpatch availablevia msrc
Product: cbl2 grub2 2.06-15 on CBL Mariner 2.0Fixed in: 2.06-15

Vendor Advisories (2)

microsoft2025-Mar/CVE-2024-45779Moderate

Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser

Mar 11, 2025
redhatCVE-2024-45779Moderate

grub2: fs/bfs: Integer overflow leads to Heap OOB Read in the BFS parser

Feb 18, 2025

References

access.redhat.com / security/cve/CVE-2024-45779
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
lists.gnu.org / archive/html/grub-devel/2025-02/msg00024.html
Mailing List