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STIX
CVE-2026-25818
Critical · 9.1
CWE-315
Mar 13, 2026
HMS Networks Ewon Flexy with firmware before 15.0s4, Cosy+ with firmware 22.xx before…
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.