Netskope Threat Labs

BROWSER-IE Microsoft Edge scripting engine Map prototype memory corruption attempt

IPS-CFWIPS-SWG

1 SID: 52084

First seen
December 2023
Last seen
October 2026

Detects web content that exploits CVE-2018-8288, memory corruption in Microsoft Edge's scripting engine triggered by redefining Map.prototype.get that can allow code execution. The rule matches the method reassignment and float grooming that public exploits use to confuse the engine's map handling.