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CVE-2025-64090

Zenitel Tcis-3 Firmware command injection

10.0 CRITICALEPSS 0.42%
  1. Published9 Jan 2026

Description

This vulnerability allows authenticated attackers to execute commands via the hostname of the device.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Zenitel Tcis-3 Firmware< 9.2.3.3

Remediation

Fixed in
Zenitel Tcis-3 Firmware≥ 9.2.3.3

Frequently asked

Is CVE-2025-64090 being actively exploited?

CVE-2025-64090 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.42%.

How severe is CVE-2025-64090?

CVE-2025-64090 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 0.42% probability of exploitation.

Which products are affected by CVE-2025-64090?

Affected products include Zenitel Tcis-3 Firmware.

How do I fix CVE-2025-64090?

Upgrade affected software to a fixed version, for example Zenitel Tcis-3 Firmware 9.2.3.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-64090 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.