smb4k: An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit vi...
CVE-2025-66003 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2025-66003, released January 8, 2026. It is not reported as exploited. Patch Radar priority: High.
An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit via smb4k mounthelper if they can access and control the contents of a Samba shareThis issue affects smb4k: from ? before 4.0.5.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| smb4k · Debian 13.5 (trixie) | 4.0.0-1+deb13u1 | DEBIAN-CVE-2025-66003 | Jan 8, 2026 |
| smb4k · Debian 14 | 4.0.5-1 | DEBIAN-CVE-2025-66003 | Jan 8, 2026 |
| smb4k · Fedora 43 | 4.0.6-1.fc43 | FEDORA-2026-9250FDF5CB | Apr 9, 2026 |
| smb4k-debuginfo · Fedora 43 | 4.0.6-1.fc43 | FEDORA-2026-9250FDF5CB | Apr 9, 2026 |
| smb4k-debugsource · Fedora 43 | 4.0.6-1.fc43 | FEDORA-2026-9250FDF5CB | Apr 9, 2026 |
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