CVE-2021-25909: Zivautomation 4cct-EA6-334126bf Firmware

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

ZIV Automation 4CCT-EA6-334126BF firmware version 3.23.80.27.36371, allows an unauthenticated, remote attacker to cause a denial of service condition on the device. An attacker could exploit this vulnerability by sending specific packets to the port 7919.

Affected products

• Zivautomation 4cct-EA6-334126bf Firmware: version 3.23.80.27.36371 only

Published 2021-01-29. Last modified 2026-06-17.