Netskope Threat Labs

BROWSER-IE Microsoft Internet Explorer frameBorder denial of service attempt

IPS-SWG

1 SID: 44192

First seen
August 2022
Last seen
October 2026

Detects web content that manipulates the frameBorder attribute of dynamically created frames to crash Internet Explorer. The crafted property assignment reaches a code path that dereferences invalid state, so the browser stops responding or crashes without running malicious code.