CVE-2026-46569: Tuxera Ntfs-3g

High severity, CVSS 7.7. EPSS: 0.2% chance of exploitation in the next 30 days.

In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_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 extending a directory, e.g., by creating a file.

Affected products

• Tuxera Ntfs-3g: before 2026.7.7 (fixed in 2026.7.7)

Published 2026-10-07. Last modified 2026-10-09.