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.
| Reporter | Title | Published | Views | Family All 45 |
|---|---|---|---|---|
 | CVE-2026-40706 | 21 Apr 202600:00 | – | attackerkb |
 | CVE-2026-40706 | 21 Apr 202600:00 | – | alpinelinux |
 | Azure Linux 3.0 Security Update: CBL-Mariner Releases (CVE-2026-40706) | 23 Apr 202600:00 | – | nessus |
| Debian dla-4544 : libntfs-3g883 - security update | 21 Apr 202600:00 | – | nessus |
| Debian dsa-6221 : libntfs-3g89 - security update | 21 Apr 202600:00 | – | nessus |
| CBL Mariner 2.0 Security Update: CBL-Mariner Releases (CVE-2026-40706) | 25 Apr 202600:00 | – | nessus |
| openSUSE 16 Security Update : ntfs-3g_ntfsprogs (openSUSE-SU-2026:20651-1) | 2 May 202600:00 | – | nessus |
| SUSE SLED15 / SLES15 Security Update : ntfs-3g_ntfsprogs (SUSE-SU-2026:1571-1) | 24 Apr 202600:00 | – | nessus |
| SUSE SLES16 Security Update : ntfs-3g_ntfsprogs (SUSE-SU-2026:21432-1) | 5 May 202600:00 | – | nessus |
| Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : NTFS-3G vulnerabilities (USN-8192-1) | 22 Apr 202600:00 | – | nessus |
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24 Apr 2026 21:45Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.18.4
EPSS0.00165
SSVC