This indicates an attack attempt to exploit a Memory Corruption vulnerability in Microsoft Edge.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted HTML file. An attacker can exploit this by tricking an unsuspecting user into visiting a malicious webpage and execute arbitrary code within the context of the application.
Microsoft Edge Windows 10 for 32-bit Systems (3163912)
Microsoft Edge Windows 10 for x64-based Systems (3163912)
Microsoft Edge Windows 10 Version 1511 for 32-bit Systems (3172985)
Microsoft Edge Windows 10 Version 1511 for x64-based Systems (3172985)
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.