CVE-2026-46572

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-07 · updated 2026-10-08
Weakness: CWE-122

Description

In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_cut_tail() in libntfs-3g/index.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 specially crafted directory.

Affected products

Tuxera NTFS-3G: before 2026.7.7 — fixed in 2026.7.7

How to fix

Upgrade to a fixed version: Tuxera NTFS-3G 2026.7.7. Check the vendor advisory for mitigations.

References

https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-wx5r-gc7w-9hhc

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