Denial of Service Vulnerability in HMS Networks Ewon Flexy and Cosy+ Devices
CVE-2026-25819

7.5HIGH

Key Information:

Vendor

HMS Networks

Status
Ewon Flexy and Cosy+
Vendor
CVE Published:
12 March 2026

What is CVE-2026-25819?

HMS Networks' Ewon Flexy and Cosy+ devices are susceptible to a Denial of Service attack due to a vulnerability that permits unauthenticated attackers to exploit the device's web interface. This can be executed by sending a specifically crafted HTTP request that results in the device rebooting unexpectedly. Users are advised to ensure their devices are running the latest firmware to mitigate this risk.

References

https://www.hms-networks.com/p/flexy20500-00ma-ewon-flexy...
https://hmsnetworks.blob.core.windows.net/nlw/docs/defaul...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.