{"id":"CVE-2026-46570","title":"In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_index_walk_down() in libntfs-3g/index.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image","summary":"In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_index_walk_down() in libntfs-3g/index.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 …","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"tuxera","product":"ntfs-3g","affected":["ntfs-3g < 2026.7.7"],"patched":["ntfs-3g 2026.7.7"],"published":"2026-10-07","updated":"2026-10-08","sourceUpdated":"2026-10-08T19:08:16.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46570","references":[{"url":"https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7","label":"cve@mitre.org"},{"url":"https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-m6qq-pv5j-2wxc","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"epss":0.00152,"epssPercentile":0.04309,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-07T16:25:27.641833Z"},"ingestedAt":"2026-10-07T14:33:21.962Z","slug":"CVE-2026-46570","body":"## Overview\n\nIn NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_index_walk_down() in libntfs-3g/index.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 by reading the special crafted file metadata.\n\n## Affected\n\n- `ntfs-3g < 2026.7.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `ntfs-3g 2026.7.7`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":217623,"id":"CVE-2026-46570","ts":1791391182421,"field":"cvss","old":null,"new":"8.1"},{"seq":217622,"id":"CVE-2026-46570","ts":1791391182421,"field":"severity","old":"none","new":"high"}]}