CVE-2026-46571

NTFS-3G Out-of-Bounds Read Exposes Process Memory

Published Oct 7, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfs_fix_file_name() in libntfs-3g/reparse.c that allows an attacker to read possibly confidential information in ntfs-3g process memory by crafting a malicious NTFS image. The out-of-bounds read is triggered by a readlink on a corrupted file.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4883-1 ntfs-3g security update
Debian DSA Debian DSA DSA-6389-1 ntfs-3g security update
Ubuntu USN Ubuntu USN USN-8554-1 NTFS-3G vulnerabilities
History
Type Values Removed Values Added
CPEs cpe:2.3:a:tuxera:ntfs-3g:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title NTFS-3G Out-of-Bounds Read Exposes Process Memory
Type Values Removed Values Added
Title Out‑of‑Bounds Read in NTFS‑3G Enables Information Disclosure
Weaknesses CWE-788
Type Values Removed Values Added
Title Out‑of‑Bounds Read in NTFS‑3G Enables Information Disclosure
First Time appeared Tuxera
Tuxera ntfs-3g
Weaknesses CWE-788
Vendors & Products Tuxera
Tuxera ntfs-3g
Type Values Removed Values Added
Weaknesses CWE-125
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

ssvc

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

Type Values Removed Values Added
Description In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfs_fix_file_name() in libntfs-3g/reparse.c that allows an attacker to read possibly confidential information in ntfs-3g process memory by crafting a malicious NTFS image. The out-of-bounds read is triggered by a readlink on a corrupted file.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 7, 2026, 2:29 PM
Reserved
May 15, 2026, 12:00 AM
Status
Analyzed
Published
Oct 7, 2026, 2:17 PM
Modified
Oct 8, 2026, 7:08 PM