Netskope Threat Labs

BROWSER-CHROME Google Chromium V8 out-of-bounds read and write attempt

IPS-CFWIPS-SWG

1 SID: 66665

First seen
August 2026
Last seen
August 2026

Detects web content that exploits CVE-2025-5419, an out-of-bounds read and write in the V8 engine in Chrome that can allow remote code execution. The rule matches the float array indexing over a confused string value that public exploits use, and Google confirmed exploitation in the wild before the May 2025 patch.