RCE in Zenitel Tcis-3
CVE-2025-64091
This vulnerability allows authenticated attackers to execute commands via the NTP-configuration of the device.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.003 (23.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
Affected products
- Zenitel Tcis-3
- Zenitel Tcis-3+ — versions <9.2.3.3
- Zenitel Tcis-3_firmware
Weakness classification (CWE)
References
- cert@ncsc.nl (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-64091?
- CVE-2025-64091 is a high-severity vulnerability in Zenitel Tcis-3, classified under OS Command Injection. CVSS score: 8.6/10. Published 2026-01-09.
- How severe is CVE-2025-64091?
- High severity. CVSS v3 base score is 8.6 out of 10.