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TI-2026-40511 Aliases CVE-2026-56135

In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function…

Priority LOW 33CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00142 3rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:tuxera:ntfs-3g:*:*:*:*:*:*:*:*before 2026.7.7VulnerableTuxera
  • cpe:2.3:a:tuxera:ntfs-3g:*:*:*:*:*:*:*:* Versions before 2026.7.7 Vulnerable ·Tuxera

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56135

References

Patch 1

  • TI-2017-00333 ntfs-3g: Modprobe influence vulnerability via environment variables CVSS 3.1HIGH 7.8
  • TI-2021-14150 In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode is loaded in the… CVSS 3.1HIGH 7.8
  • TI-2026-69152 Heap buffer overflow in NTFS-3G lets attackers corrupt memory CVSS 3.1HIGH 8.1
  • TI-2022-19124 A buffer overflow was discovered in NTFS-3G before 2022.10.3. CVSS 3.1HIGH 7.8
  • TI-2022-12918 A crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22. CVSS 3.1HIGH 7.8
  • TI-2022-12917 A crafted NTFS image can cause a heap-based buffer overflow in ntfs_mft_rec_alloc in NTFS-3G through 2021.8.22. CVSS 3.1HIGH 7.8
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences