Mozilla Firefox 1.5 before 1.5.0.5 and SeaMonkey before 1.0.3 allows remote attackers to execute arbitrary code by changing certain properties of the window navigator object (window.navigator) that are accessed when Java starts up, which causes a crash that leads to code execution.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.811
EPSS Ranking 99.1%