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.

HighVendor CVSS 7.7 / 10 1 CVE Published Oct 10, 2026 at 1:06 AM UTC

Summary

Mariner

Release Notes

Oct 10, 2026 at 1:06 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 12, 2026 at 10:25 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Oct 21, 2026 at 1:15 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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