Description
An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
Published: 2023-10-25
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3605-1 grub2 security update
Debian DSA Debian DSA DSA-5519-1 grub2 security update
EUVD EUVD EUVD-2023-54544 An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
Ubuntu USN Ubuntu USN USN-6410-1 GRUB2 vulnerabilities
History

Sat, 07 Nov 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els

Mon, 02 Nov 2026 23:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 04 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Fri, 22 Nov 2024 12:00:00 +0000


Mon, 16 Sep 2024 16:30:00 +0000


Subscriptions

Gnu Grub2
Redhat Enterprise Linux Rhel Els
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-07T11:32:46.207Z

Reserved: 2023-08-31T21:53:46.147Z

Link: CVE-2023-4693

cve-icon Vulnrichment

Updated: 2025-11-04T19:25:44.865Z

cve-icon NVD

Status : Modified

Published: 2023-10-25T18:17:41.817

Modified: 2026-11-07T12:17:38.117

Link: CVE-2023-4693

cve-icon Redhat

Severity : Low

Publid Date: 2023-10-03T00:00:00Z

Links: CVE-2023-4693 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses