CyberSecurityBoardThreat Intel · CVEs · Products
Critical CVEs

CVE-2026-87491 — Google Chromium V8 Out of Bounds Write Vulnerability

September 9, 2026

Google Chromium V8 Out of Bounds Write Vulnerability

Affected vendor/product: Google Chromium V8

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA KEV date added: 2026-09-09

Due date: 2026-09-23

Known ransomware campaign use: Unknown

View CISA KEV catalog