Google has released security updates patching 230 vulnerabilities in Chrome, including CVE-2026-87491, an out-of-bounds write in the V8 JavaScript and WebAssembly engine that is under active exploitation in the wild. The vulnerability enables code execution inside the Chrome sandbox, potentially allowing threat actors to bypass isolation guarantees. No CVSS score was assigned in the initial report, but the flaw is classified as medium severity. Users should update Chrome to the latest version to mitigate the risk.

What should defenders do?

Update Google Chrome to the latest version immediately. Enable automatic updates to receive security fixes promptly.

highZero-Day

Google Patches Actively Exploited Chrome Zero-Day CVE-2026-87491

Out-of-bounds write in V8 engine enables sandbox escape; users urged to update immediately

CyberIntel DeskPublished 19 days agoUpdated less than a minute ago1 min read

Google Patches Actively Exploited Chrome Zero-Day CVE-2026-87491

Key Takeaways

Google released Chrome updates patching 230 vulnerabilities, including one actively exploited zero-day.
CVE-2026-87491 is an out-of-bounds write in the V8 JavaScript and WebAssembly engine.
The flaw enables code execution inside the Chrome sandbox and is under active exploitation.
Users should update Chrome immediately to the latest version to apply the fix.

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