High severity · published Oct 7, 2026
CVE-2026-42618
In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_decompress() in compress.c that allows an attacker to corrupt one byte of heap memory in the SUID-root ntfs-3g…
7.1
CVSS
0.1%
EPSS
No
On KEV
Description
In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_decompress() in compress.c that allows an attacker to corrupt one byte of heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by reading the special crafted file.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% 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-2026-42618
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42618
github.com
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-6whp-3f63-97qw
github.com
https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7
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