Tuxera ntfs-3g 2021.8.22/2022.10.3/2026.2.25 Reparse libntfs-3g/reparse.c ntfs_fix_file_name out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k1.48

Summaryinfo

A vulnerability was found in Tuxera ntfs-3g. It has been classified as critical. Affected is the function ntfs_fix_file_name of the file libntfs-3g/reparse.c of the component Reparse. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-46571. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Tuxera ntfs-3g. It has been rated as critical. This issue affects the function ntfs_fix_file_name of the file libntfs-3g/reparse.c of the component Reparse. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfs_fix_file_name() in libntfs-3g/reparse.c that allows an attacker to read possibly confidential information in ntfs-3g process memory by crafting a malicious NTFS image. The out-of-bounds read is triggered by a readlink on a corrupted file.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-46571 since 05/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2026.7.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-94353). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: ntfs-3g 2026.7.7

Timelineinfo

05/15/2026 CVE reserved
10/07/2026 +145 days Advisory disclosed
10/07/2026 +0 days VulDB entry created
10/07/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-46571 (🔒)
GCVE (CVE): GCVE-0-2026-46571
GCVE (VulDB): GCVE-100-415007
EUVD: 🔒

Entryinfo

Created: 10/07/2026 16:18
Updated: 10/07/2026 17:26
Changes: 10/07/2026 16:18 (57), 10/07/2026 17:26 (1)
Complete: 🔍
Cache ID: 216::103

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