CVE-2025-64093: Zenitel ICX500 Firmware

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the hostname of the device.

Affected products

• Zenitel ICX500 Firmware: before 1.4.3.3 (fixed in 1.4.3.3)
• Zenitel ICX510 Firmware: before 1.4.3.3 (fixed in 1.4.3.3)

Published 2026-01-09. Last modified 2026-06-17.