Google Chrome up to 150.0.7871.128 WebAudio sandbox

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0$5k-$25k1.99-

Summaryinfo

A vulnerability, which was classified as critical, has been found in Google Chrome. Affected by this vulnerability is an unknown functionality of the component WebAudio. The manipulation leads to sandbox. This vulnerability is traded as CVE-2026-16421. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Google Chrome and classified as critical. This issue affects an unknown functionality of the component WebAudio. The manipulation with an unknown input leads to a sandbox vulnerability. Using CWE to declare the problem leads to CWE-265. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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)

It is possible to read the advisory at chromereleases.googleblog.com. The identification of this vulnerability is CVE-2026-16421 since 07/21/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/22/2026). The attack technique deployed by this issue is T1611 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 328866 (Google Chrome < 150.0.7871.181 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 150.0.7871.182 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (328866). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Sandbox
CWE: CWE-265 / CWE-264
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 328866
Nessus Name: Google Chrome < 150.0.7871.181 Multiple Vulnerabilities

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Chrome 150.0.7871.182

Timelineinfo

07/21/2026 CVE reserved
07/22/2026 +1 days Advisory disclosed
07/22/2026 +0 days VulDB entry created
07/22/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: chromereleases.googleblog.com
Status: Confirmed

CVE: CVE-2026-16421 (🔒)
GCVE (CVE): GCVE-0-2026-16421
GCVE (VulDB): GCVE-100-382019

Entryinfo

Created: 07/22/2026 07:38
Updated: 07/22/2026 14:44
Changes: 07/22/2026 07:38 (55), 07/22/2026 14:44 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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