High severity8.8NVD Advisory· Published Mar 13, 2026· Updated Apr 27, 2026

CVE-2026-25817

Description

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 have improper neutralization of special elements used in an OS command allowing remote code execution by attackers with low privilege access on the gateway, provided the attacker has credentials.

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

hmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2026-03-09-001---ewon-several-flexy-and-cosy--vulnerabilities.pdfnvd
www.hms-networks.com/p/flexy20500-00ma-ewon-flexy-205nvd

News mentions

No linked articles in our index yet.

cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000