---
id: CVE-2026-56135
title: >-
  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 i…
summary: >-
  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 i…
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: '2026-08-24'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:03:22.897'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56135'
references:
  - url: 'https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00142
epssPercentile: 0.02846
ingestedAt: '2026-09-09T16:14:05.515Z'
---

## Overview

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

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