What is the CVSS score of CVE-2026-16421?

CVE-2026-16421 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2026-16421?

Yes, a patch is available for CVE-2026-16421. Update the affected software to the latest version immediately.

Google CVE-2026-16421

EUVD-2026-47567 HIGH

Improper Input Validation (CWE-20)

2026-07-21 chrome-cve-admin@google.com

GHSA-jmgx-g6r2-c5f2

RCE Google Suse

8.8

CVSS 3.1 · Vendor: google

Severity by source

Vendor (google) PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SUSE

CRITICAL

qualitative

Primary rating from Vendor (google).

CVSS VectorVendor: google

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jul 26, 2026 - 12:00 vuln.today

CVSS changed

Jul 24, 2026 - 13:22 NVD

8.8 (HIGH)

CVE Published

Jul 21, 2026 - 23:16 cve.org

HIGH 8.8

CVE Published

Jul 21, 2026 - 23:16 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

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)

AnalysisAI

Arbitrary code execution inside the renderer sandbox in Google Chrome before version 150.0.7871.182 due to an input validation flaw in the WebAudio implementation when handling a crafted HTML page. An attacker can execute arbitrary code within the sandbox by luring a user to a malicious site. No active exploitation reported; a vendor patch is available.