What’s Vulnerable › Vulnerabilities

CVE-2025-59818: Authenticated Remote Code Execution via the file name of an uploaded file

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-04 · updated 2026-06-17
• Weakness: CWE-77

Description

This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file name of an uploaded file.

Affected products

• Zenitel TCIS-3+: before 9.2.3.3 — fixed in 9.2.3.3

How to fix

Upgrade to a fixed version: Zenitel TCIS-3+ 9.2.3.3. Check the vendor advisory for mitigations.

References

• https://wiki.zenitel.com/wiki/Turbine_9.3_-_Release_notes
• https://wiki.zenitel.com/wiki/VSF-Display_Series_9.3_Release_Notes
• https://wiki.zenitel.com/wiki/VSF-Fortitude6_9.3_Release_Notes
• https://wiki.zenitel.com/wiki/VSF-Fortitude8_9.3_Release_Notes
• https://wiki.zenitel.com/wiki/ZIPS_9.3_-_Release_notes
• https://www.zenitel.com/sites/default/files/2025-12/A100K12333%20Zenitel%20Security%20Advisory.pdf

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