Exploitation via malicious XMPP messages
https://www.bleepingcomputer.com/news/security/cisco-fixes-critical-code-execution-bug-in-jabber-for-windows/
Cisco today addressed a critical severity remote code execution vulnerability affecting multiple versions of its Cisco Jabber for Windows software.
Cisco Jabber for Windows is a desktop collaboration app designed to provide users with presence, instant messaging (IM), cloud messaging, desktop sharing, as well as audio, video, and web conferencing.