SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x and below contain an insufficient session expiration vulnerability that allows attackers to reuse old session credentials. Attackers can exploit weak session management to potentially hijack active user sessions and gain unauthorized access to the application.
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”