CVE-2026-56135

Published Aug 24, 2026 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Description
In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by creating a file in a crafted directory.

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 Heap‑based Buffer Overflow in NTFS‑3G's SUID‑root Binary Allows Heap Corruption via Malicious NTFS Image
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

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

Type Values Removed Values Added
Title Heap‑based Buffer Overflow in NTFS‑3G's SUID‑root Binary Allows Heap Corruption via Malicious NTFS Image
First Time appeared Tuxera
Tuxera ntfs-3g
Weaknesses CWE-122
Vendors & Products Tuxera
Tuxera ntfs-3g
Type Values Removed Values Added
Description In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by creating a file in a crafted directory.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 28, 2026, 4:21 PM
Reserved
Jun 19, 2026, 12:00 AM
Status
Analyzed
Published
Aug 24, 2026, 9:17 PM
Modified
Oct 14, 2026, 3:56 PM