Remote Code Execution Vulnerability in HMS Networks Ewon Flexy and Cosy+
CVE-2026-25817

8.8HIGH

Key Information:

Vendor

HMS Networks

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

What is CVE-2026-25817?

HMS Networks Ewon Flexy and Cosy+ devices are susceptible to a vulnerability due to improper neutralization of special elements in operating system commands. This flaw enables remote code execution by attackers with low privilege access, provided they possess valid credentials. The affected devices include Ewon Flexy with firmware prior to 15.0s4, and Cosy+ models with firmware versions before 22.1s6 and 23.0s3. Users are advised to update their firmware to the latest versions to mitigate this security 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:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.