CVE-2026-56135
NTFS-3G Heap-Based Buffer Overflow
Description
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.
INFO
Published Date :
Aug. 24, 2026, 9:17 p.m.
Last Modified :
Oct. 14, 2026, 3:56 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update NTFS-3G to a version later than 2026.2.25.
- Rebuild the ntfs-3g binary from source code if necessary.
- Avoid processing untrusted NTFS images.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-56135.
| URL | Resource |
|---|---|
| https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r | Mitigation Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-56135 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-56135
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56135 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-56135 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 14, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:tuxera:ntfs-3g:*:*:*:*:*:*:*:* versions up to (excluding) 2026.7.7 Added Reference Type MITRE: https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r Types: Mitigation, Patch, Vendor Advisory -
CVE Translated by [email protected]
Oct. 12, 2026
Action Type Old Value New Value Added Translation Title: NTFS-3G, Description: En NTFS-3G hasta 2026.2.25, existe un desbordamiento de búfer basado en montículo en la función build_inherited_id() en libntfs-3g/security.c que permite a un atacante corromper la memoria del montículo en el binario ntfs-3g con SUID-root mediante la creación de una imagen NTFS maliciosa. El desbordamiento se activa al crear un archivo en un directorio manipulado. -
CVE Modified by [email protected]
Aug. 28, 2026
Action Type Old Value New Value Added Reference https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r Removed Reference https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-122 Added SSVC {'id': 'CVE-2026-56135', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-28T16:20:56.638875Z'} -
New CVE Received by [email protected]
Aug. 24, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'n/a', 'product': 'n/a', 'versions': [{'status': 'affected', 'version': 'n/a'}]}] Added Description 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. Added Reference https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r