CVE-2026-25818
Critical · 9.1CVSS
9.1
EPSS
0.2%
Published
Mar 13, 2026
CISA due date
—
The record
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 weak entropy for authentication cookies, allowing an attacker with a stolen session cookie to find the user password by brute-forcing an encryption parameter.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|