CVE-2026-56136: n/a
Description
CVE-2026-56136 is an out-of-bounds read vulnerability in NTFS-3G through version 2026.2.25. It occurs in the ntfs_ir_nill() function within libntfs-3g/index.c and can be triggered by creating a file with a specially crafted name. This flaw allows an attacker with local access to read potentially confidential information from the memory of the ntfs-3g process. The vulnerability has a medium severity rating with a CVSS score of 4.7.
CVSS v3.1
Score 4.7medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in NTFS-3G versions prior to 2026.2.25 involves an out-of-bounds read in the ntfs_ir_nill() function. An attacker can exploit this by crafting a malicious NTFS image and creating a file with a specially crafted name, causing the ntfs-3g process to read memory beyond intended bounds. This may lead to disclosure of sensitive information from the process memory. The vulnerability is identified as CWE-125 (Out-of-bounds Read).
Potential Impact
An attacker with the ability to create files on an NTFS-3G mounted filesystem can cause the ntfs-3g process to read memory out-of-bounds, potentially exposing confidential information. There is no indication of integrity or availability impact. Exploitation requires local access and high attack complexity due to the need for crafting a malicious NTFS image and file name.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, avoid mounting untrusted NTFS images or creating files with untrusted names on NTFS-3G filesystems. Monitor vendor channels for updates regarding an official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-19T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a8ca814acd9273b4915057e
Added to database: 08/24/2026, 20:22:44 UTC
Last enriched: 09/10/2026, 21:17:57 UTC
Last updated: 10/08/2026, 18:48:46 UTC
Views: 41
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