CVE-2025-64091 Authenticated Remote Code Execution in the NTP-configuration
Authenticated attackers can execute arbitrary commands via the NTP configuration interface on Zenitel TCIS-3+ devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64091?
CVE-2025-64091 is a high-severity command injection vulnerability in Zenitel TCIS-3+, published on 9 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This vulnerability allows authenticated attackers to execute commands via the NTP-configuration of the device.
Weakness: CWE-78
Which versions are affected by CVE-2025-64091?
It affects 1 product.
Products include Zenitel Tcis-3 Firmware.
How do I fix CVE-2025-64091?
No fix has been published for CVE-2025-64091 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-64091 being exploited?
There is no known exploitation of CVE-2025-64091 in the wild and no public exploit code.
Other vulnerabilities in Zenitel TCIS-3+
Sources
Also known as GHSA-29gv-cv9c-r93w.