CVE-2026-46569

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.

CVSS 3.1

7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWEs

CWE-787, CWE-122

Published

2026-10-07

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

Affected

• tuxera:ntfs-3g

References

• https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7
• https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-xxv8-9r24-hcj9

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