CVE-2026-25819

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

HMS Networks Ewon Flexy with firmware before 15.0s4, Cosy+ with firmware 22.xx before 22.1s6, and Cosy+ with firmware 23.xx before 23.0s3 allows unauthenticated attackers to cause a Denial of Service by using a specially crafted HTTP request that leads to a reboot of the device, provided they have access to the device's GUI.

Published 2026-03-13. Last modified 2026-06-17.