CVE-2026-40706 | tuxera ntfs-3g 2022.10.3 NTFS Image acls.c ntfs_build_permissions_posix buffer overflow

VDB-358544 · CVE-2026-40706 · GCVE-0-2026-40706 TUXERA NTFS-3G 2022.10.3 NTFS IMAGE ACLS.C NTFS_BUILD_PERMISSIONS_POSIX BUFFER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.5 $0-$5k 2.90+ Summaryinfo A vulnerability was found in tuxera ntfs-3g 2022.10.3 and classified as critical. Affected is the function ntfs_build_permissions_posix of the file acls.c of the component NTFS Image Handler. Such manipulation leads to buffer overflow. This vulnerability is traded as CVE-2026-40706. An attack has to be approached locally. There is no exploit available. It is suggested to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, has been found in tuxera ntfs-3g 2022.10.3. Affected by this issue is the function ntfs_build_permissions_posix of the file acls.c of the component NTFS Image Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2026-40706. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. Upgrading to version 2026.2.25 eliminates this vulnerability. The upgrade is hosted for download at github.com. Productinfo Vendor tuxera Name ntfs-3g Version 2022.10.3 License open-source Website Product: https://github.com/tuxera/ntfs-3g/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.8 VulDB Meta Temp Score: 7.5 VulDB Base Score: 7.8 VulDB Temp Score: 7.5 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Buffer overflow CWE: CWE-120 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: ntfs-3g 2026.2.25 Timelineinfo 04/21/2026 Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: seclists.org Status: Confirmed Confirmation: 🔒 CVE: CVE-2026-40706 (🔒) GCVE (CVE): GCVE-0-2026-40706 GCVE (VulDB): GCVE-100-358544 Entryinfo Created: 04/21/2026 19:46 Changes: 04/21/2026 19:46 (56) Complete: 🔍 Cache ID: 99:0E2:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸