Netskope Threat Labs

BROWSER-IE Microsoft Internet Explorer scripting engine memory corruption attempt

IPS-CFWIPS-SWG

7 SIDs: 44510, 45138, 45146, 45877, 52239, 200215, 200302

First seen
February 2022
Last seen
October 2026

Detects web content that exploits memory corruption vulnerabilities in Internet Explorer's scripting engine, including CVE-2017-11810, CVE-2017-11890, CVE-2018-0935, and CVE-2019-1429, which can allow code execution. The rule matches the error object manipulation and garbage collection that public exploits use across this family of flaws.