Vulnerability · Published Oct 7, 2026 · Assigned by mitre
CVE-2026-46571
Medium 5.5
In plain English
A medium-severity out-of-bounds read in the ntfs-3g package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfs_fix_file_name() in libntfs-3g/reparse.c that allows an attacker to read possibly confidential information in ntfs-3g process memory by crafting a malicious NTFS image. The out-of-bounds read is triggered by a readlink on a corrupted file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ntfs-3g | 1:2022.10.3-1+deb12u4 | DEBIAN-CVE-2026-46571 |
| Debian:13 | ntfs-3g | 1:2022.10.3-5+deb13u2 | DEBIAN-CVE-2026-46571 |
| Debian:14 | ntfs-3g | 1:2026.7.7-2 | DEBIAN-CVE-2026-46571 |
| Ubuntu:22.04:LTS | ntfs-3g | 1:2021.8.22-3ubuntu1.4 | USN-8554-1 |
| Ubuntu:22.04:LTS | ntfs-3g | 1:2021.8.22-3ubuntu1.4 | UBUNTU-CVE-2026-46571 |
| Ubuntu:24.04:LTS | ntfs-3g | 1:2022.10.3-1.2ubuntu3.2 | USN-8554-1 |
| Ubuntu:24.04:LTS | ntfs-3g | 1:2022.10.3-1.2ubuntu3.2 | UBUNTU-CVE-2026-46571 |
| Ubuntu:26.04:LTS | ntfs-3g | 1:2022.10.3-5ubuntu1.1 | UBUNTU-CVE-2026-46571 |
| Ubuntu:26.04:LTS | ntfs-3g | 1:2022.10.3-5ubuntu1.1 | USN-8554-1 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N