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High severity · published Aug 24, 2026
CVE-2026-56135
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…
7.4
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% 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
Affected product
NT
Ntfs-3g
Tuxera
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56135
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56135
Mitigation
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-c9qg-fh4v-mq8r
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