CVE-2025-59818
Critical
Description
This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file name of an uploaded file.
SeverityCritical
CVSS10.0
Exploit probability—
ProductZenitel Tcis-3 Firmware
PublishedFeb 4, 2026
First seenFeb 4, 2026
Weakness typeCWE-77Command injection
How to fix
Update
- zenitel tcis-3_firmware9.2.3.3 or later
Vendor advisories
- wiki.zenitel.com/wiki/Turbine_9.3_-_Release_notes
- zenitel.com/sites/default/files/2025-12/A100K12333%20Zenitel%20Security%20Advisory.pdf
- wiki.zenitel.com/wiki/VSF-Fortitude8_9.3_Release_Notes
- wiki.zenitel.com/wiki/ZIPS_9.3_-_Release_notes
- wiki.zenitel.com/wiki/VSF-Fortitude6_9.3_Release_Notes
- wiki.zenitel.com/wiki/VSF-Display_Series_9.3_Release_Notes
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zenitel tcis-3_firmware | v < 9.2.3.3 | 9.2.3.3 |
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