High severity · published Oct 7, 2026
CVE-2026-46569
In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_tail(), in libntfs-3g/index.c, that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g…
7.7
CVSS
0.2%
EPSS
No
On KEV
Description
In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_tail(), in libntfs-3g/index.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 extending a directory, e.g., by creating a file.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NT
Ntfs-3g · Tuxera
before 2026.7.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46569
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46569
github.com
https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7
github.com
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-xxv8-9r24-hcj9
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