CVE-2026-87491

This is a mistake in Chrome’s internal JavaScript engine (V8) where a malicious web page can push Chrome to write outside the expected memory area. In real attacks, that can let an attacker run code in the browser’s sandbox while a user just visits a specially crafted page. It’s like a lock with a dangerous weak spot: even if it’s “contained,” attackers may still use it to steal what they can from your session or disrupt work.

This matters if your business runs Google Chrome on any computers where employees or customers browse the web. Because it’s already on CISA’s KEV list, treat it as a real, actively abused browser vulnerability. It’s only a risk when a device can reach the internet and can load attacker-controlled web content in Chrome (for example, users visiting a malicious page).

This is RED because CISA added CVE-2026-87491 to the KEV list, meaning it has been confirmed exploited in the real world. Attackers are already using crafted HTML pages to trigger the V8 out-of-bounds write, so delay increases exposure of any device running an unpatched Chrome version.