{"id":"CVE-2026-46569","title":"In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_tail(), 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_ib_copy_tail(), 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 t…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-787","CWE-122"],"vendor":"tuxera","product":"ntfs-3g","affected":["ntfs-3g < 2026.7.7"],"patched":["ntfs-3g 2026.7.7"],"published":"2026-10-07","updated":"2026-10-09","sourceUpdated":"2026-10-09T14:17:21.277","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46569","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-xxv8-9r24-hcj9","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"epss":0.0016,"epssPercentile":0.05149,"ingestedAt":"2026-10-07T14:33:21.956Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-09T01:57:30.429039Z"},"slug":"CVE-2026-46569","body":"## Overview\n\nIn NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_copy_tail(), 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 extending a directory, e.g., by creating a file.\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":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":218270,"id":"CVE-2026-46569","ts":1791490026321,"field":"cvss","old":null,"new":"7.7"},{"seq":218269,"id":"CVE-2026-46569","ts":1791490026321,"field":"severity","old":"none","new":"high"}]}