CVE-2026-40706 (GCVE-0-2026-40706)
Vulnerability from cvelistv5 – Published: 2026-04-21 00:00 – Updated: 2026-04-22 15:35
VLAI
EPSS
VEX
Summary
In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfs_build_permissions_posix() in acls.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 on the READ path (stat, readdir, open) when processing a security descriptor with multiple ACCESS_DENIED ACEs containing WRITE_OWNER from distinct group SIDs.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 13:03 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
6 references
Impacted products
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