🛡️ CVE-2023-4692
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-122 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE CWE-122
Public Exploit ⚠️ Yes
Source NVD
Published 2023-10-25
Updated 2026-06-08
Modified 2025-11-04
Fix URL N/A

Affected Packages

Software From version Fixed in
enterprise-linux
grub2 2.12

References

Issue Tracking, Third Party Advisory https://bugzilla.redhat.com/show_bug.cgi?id=2236613
Mailing List, Third Party Advisory https://seclists.org/oss-sec/2023/q4/37
Issue Tracking, Third Party Advisory https://bugzilla.redhat.com/show_bug.cgi?id=2236613
Mailing List, Third Party Advisory https://seclists.org/oss-sec/2023/q4/37

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