---
id: CVE-2026-46572
title: >-
  In NTFS-3G before 2026.7.7, a heap buffer overflow exists in
  ntfs_ib_cut_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
summary: >-
  In NTFS-3G before 2026.7.7, a heap buffer overflow exists in
  ntfs_ib_cut_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 trig…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
published: '2026-10-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T19:17:37.393'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46572'
references:
  - url: 'https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7'
    label: cve@mitre.org
  - url: 'https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-wx5r-gc7w-9hhc'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-07T18:44:27.063716Z'
ingestedAt: '2026-10-07T14:33:21.956Z'
---

## Overview

In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_cut_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 creating a file in a specially crafted directory.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.