Google Chromium V8 contains a memory buffer vulnerability allowing remote code execution via crafted HTML pages, affecting multiple web browsers.

What Is It

This entry documents CVE-2026-3910, identified as an improper restriction of operations within the bounds of a memory buffer vulnerability. Associated with CWE-119, this flaw enables a remote attacker to execute arbitrary code inside a sandbox environment through a crafted HTML page. The vulnerability was added to CISA KEV on 2026-03-13.

Why It Matters

The risk is significant because the vulnerability allows attackers to bypass sandbox protections via web-based vectors. While known ransomware campaign use is currently unknown, the potential for arbitrary code execution remains high. This entry highlights a critical security gap where remote exploitation is possible without user interaction beyond visiting a page.

What's Vulnerable

The vulnerability impacts the Chromium V8 component used by multiple web browsers. Specifically affected products include Google Chrome, Microsoft Edge, and Opera. Any system utilizing this browser engine is potentially exposed to the described memory buffer issue, creating a broad attack surface across different user bases.

Patch Status

Required action includes applying mitigations per vendor instructions or discontinuing use if mitigations are unavailable. Cloud services must follow applicable BOD 22-01 guidance during remediation efforts. The deadline for required action is set for 2026-03-27, requiring immediate attention from security teams managing these environments.

Sources