VULNERABILITY INTELLIGENCE

CVE-2023-4692

CVSS score7.5 HIGH
EPSS probability0.54%
CISA KEVNot currently listed
Published2023-10-25
Last modified2026-07-21
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-122
  • nvd@nist.gov: CWE-787

Primary references