---
id: CVE-2026-42618
title: >-
  In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_decompress()
  in compress.c that allows an attacker to corrupt one byte of 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_decompress()
  in compress.c that allows an attacker to corrupt one byte of heap memory in
  the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow
  is t…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-122
  - CWE-193
published: '2026-10-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T15:17:20.513'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-42618'
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-6whp-3f63-97qw'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T14:31:25.717191Z'
scores:
  nvd: 7.1
  adp: 8.4
ingestedAt: '2026-10-07T14:33:21.953Z'
---

## Overview

In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_decompress() in compress.c that allows an attacker to corrupt one byte of heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by reading the special crafted file.

## Remediation

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