CVE-2026-16421 Code injection in Chrome

What is CVE-2026-16421?

CVE-2026-16421 is a high-severity code injection vulnerability in Google Chrome, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Inappropriate implementation in WebAudio in Google Chrome prior to 150.0.7871.182 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Weakness: CWE-20

Which versions are affected by CVE-2026-16421?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-16421?

Upgrade to a fixed version.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-16421 being exploited?

There is no known exploitation of CVE-2026-16421 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-16421, ECHO-f972-9d46-9a1b, GHSA-jmgx-g6r2-c5f2, MINI-8wwx-9495-pcpj.