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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-40706 Detail

Description

In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfs_build_permissions_posix() in acls.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 on the READ path (stat, readdir, open) when processing a security descriptor with multiple ACCESS_DENIED ACEs containing WRITE_OWNER from distinct group SIDs.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2026/04/21/4 CVE
https://github.com/tuxera/ntfs-3g/blob/d3ace19838ce37cfde55294e76841e6d2f393f9e/libntfs-3g/acls.c#L4011-L4027 MITRE
https://github.com/tuxera/ntfs-3g/releases/tag/2026.2.25 MITRE
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-4cwv-5285-63v9 MITRE
https://lists.debian.org/debian-lts-announce/2026/04/msg00024.html CVE
https://www.openwall.com/lists/oss-security/2026/04/21/4 MITRE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-122 Heap-based Buffer Overflow MITRE  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-40706
NVD Published Date:
04/21/2026
NVD Last Modified:
04/21/2026
Source:
MITRE