CVE-2026-56136: In NTFS-3G through 2026.2.25, an out-of-bounds read exists in ntfs_ir_nill() in libntfs-3g/index.c that allows an attacker to read possibly confidential information in an ntfs-3g process by crafting a malicious NTFS image. This read operation is triggered by creation of a file with a crafted name.

Overview

Severity

High (CVSS 7.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-27

Last Updated

2026-09-13

EPSS Score

0.12% (percentile: 1.8%)

Affected Products (2)

Other

• 21763-17084
• 21822-17084

Security Updates (1)

• Security Update

Revision History

• 2026-08-27: Information published.
• 2026-09-09: Information published.
• 2026-09-13: Information published.