An ActiveX control (Messenger.UIAutomation.1) in Windows Messenger 4.7 and 5.1 is marked as safe-for-scripting, which allows remote attackers to control the Messenger application, and "change state," obtain contact information, and establish audio or video connections without notification via unknown vectors.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.628
EPSS Ranking 98.3%