CVE-2026-56135 — HIGH (7.4)

Vulnerability Description

In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.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 creating a file in a crafted directory.

CVSS Score

7.4

HIGH

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

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-122

References

https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r

FAQ

What is CVE-2026-56135?

CVE-2026-56135 is a vulnerability with a CVSS score of 7.4 (HIGH). In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g ...

How severe is CVE-2026-56135?

CVE-2026-56135 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-56135?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.