Name: CVE-2026-42618: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2026-10-07T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-42618, CWE-193, CWE-122, CVSS 7.1, EPSS 0.00147

In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_decompress() in compress.c that allows an attacker to corrupt one byte of heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by reading the special crafted file.

CVSS Details

CVSS 3.1 Base Score: 7.1
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade ntfs-3g	Jul 23, 2026	Jul 23, 2026
Gentoo Linux	—	Upgrade sys-fs/ntfs3g.	Aug 16, 2026	Aug 16, 2026
Ubuntu	—	Upgrade libntfs-3g89t64Upgrade libntfs-3g89Upgrade ntfs-3g	Jul 20, 2026	Jul 16, 2026

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CVSS Details

Covered by Rapid7

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