CVE-2026-40706

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Source
https://cve.org/CVERecord?id=CVE-2026-40706
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40706.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-40706
Aliases
  • GHSA-4cwv-5285-63v9
Downstream
Related
Published
2026-04-21T00:00:00Z
Modified
2026-05-01T18:44:29.085839929Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfsbuildpermissionsposix() 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 ACCESSDENIED ACEs containing WRITE_OWNER from distinct group SIDs.

Database specific 
{
    "cwe_ids": [
        "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40706.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / github.com/tuxera/ntfs-3g

Affected ranges

Type
GIT
Repo
https://github.com/tuxera/ntfs-3g
Events
Introduced
78414d93613532fd82f3a82aba5d4a1c32898781
Fixed
d1cb9e825d059ef5db0ccd30d5bce202edbd69dc
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2022.10.3"
        },
        {
            "fixed": "2026.2.25"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2022.*
2022.10.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40706.json"