CVE-2026-46569

Published Oct 7, 2026 CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Description
In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_tail(), in libntfs-3g/index.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 extending a directory, e.g., by creating a 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
Title Heap Buffer Overflow in ntfs-3g SUID-Root Binary Allows Privilege Escalation
Type Values Removed Values Added
Weaknesses CWE-122
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Heap Buffer Overflow in ntfs-3g SUID-Root Binary Allows Privilege Escalation
Type Values Removed Values Added
Title Heap Buffer Overflow in NTFS-3G Affects SUID-Root Binary
Weaknesses CWE-122
Type Values Removed Values Added
Weaknesses CWE-787
CPEs cpe:2.3:a:tuxera:ntfs-3g:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

Type Values Removed Values Added
Title Heap Buffer Overflow in NTFS-3G Affects SUID-Root Binary
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 before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_tail(), in libntfs-3g/index.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 extending a directory, e.g., by creating a file.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 9, 2026, 1:46 PM
Reserved
May 15, 2026, 12:00 AM
Status
Modified
Published
Oct 7, 2026, 2:17 PM
Modified
Oct 9, 2026, 2:17 PM