CVE-2026-42617 NTFS-3G - Buffer Overflow

NTFS-3G < 2026.7.7 contains a heap buffer overflow caused by improper handling in ntfs_ir_to_ib() in index.c, letting attackers corrupt heap memory via crafted NTFS images, exploit requires file creation in a directory.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.15% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Update to version 2026.7.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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