External risk intelligence

Chrome Sandbox Escape Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-14101

This vulnerability exists within the browser's local sandbox architecture. Exploitation requires a user to navigate to a crafted HTML page, but the flaw itself is a local sandbox escape mechanism rather than a public-facing service, network gateway, or internet-exposed management interface.

Google Chrome

before 150.0.7871.47

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A security issue in Google Chrome's sandbox technology could allow attackers to escape the sandbox on Mac systems, potentially leading to broader system compromise. While the reported severity is critical, the exploit requires a user to interact with a malicious web page, and the core vulnerability lies within the browser's internal security mechanisms.

Vulnerability in Chrome's sandbox on Mac.
Could allow attackers to break out of browser limits.
Confirm relevance and scope of potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could begin by compromising the renderer process within Google Chrome. With this initial compromise, they could then present a specially crafted HTML page to a user. If the user visits this page, the attacker may be able to escape the browser's sandbox, potentially leading to further system compromise.

Requires renderer process compromise.
Triggered by visiting a crafted HTML page.
Risk of sandbox escape.

Live Threat

Current exploitation, exposure, and threat context

A remote attacker with prior access to the renderer process could potentially escape Chrome's sandbox on Mac by tricking a user into visiting a specially crafted HTML page. This could affect sensitive system data and user data accessible from within the sandbox.

System and user data within the sandbox.
Via a malicious HTML page.
Potential sandbox escape.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability affects Google Chrome on Mac and requires an attacker to trick a user into visiting a malicious HTML page. Real-world ownership typically falls to the platform or infrastructure team responsible for managing user endpoints and the browser as an application, in coordination with the security team for exposure assessment. The first practical step is to identify all Mac endpoints with Chrome, confirm if they are internet-reachable and business-critical, and then plan remediation.

Platform/Infrastructure teams own remediation.
Verify Mac endpoints running affected Chrome.
Plan targeted Chrome updates or mitigations.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Google Chrome and its sandbox component?

Google Chrome is a widely used web browser that employs a sandbox architecture to isolate web content. This security layer acts as a containment zone, ensuring that code running on a website cannot easily access your operating system or private files. It effectively acts as a safety barrier between the browser's processes and the underlying computer hardware.

What does CWE-693 mean for CVE-2026-14101?

CWE-693 refers to Protection Mechanism Failure. In the context of this vulnerability, it means the browser's sandbox—the specific feature designed to prevent unauthorized actions—is failing to enforce its own policies correctly. This allows a malicious process to break out of the confinement it should be trapped in.

How is this sandbox escape triggered?

An attacker must first compromise the browser's renderer process, which handles website content. Once they have that foothold, they must trick a user into visiting a specifically crafted HTML page. Simply having the browser open or connected to a network is not enough; the attacker's code must be executed through that specific malicious page to attempt the escape.

Do I need to worry if my Mac is not internet-facing?

According to Halo Surface Signal, this vulnerability is considered unlikely to be triggered by standard network-based attacks because it lives deep within the browser's local architecture. Since it requires a user to interact with a crafted page rather than attacking an exposed service or gateway, the risk is tied more to user activity than to whether your machine is visible to the public internet.

What is the best way to address this CVE?

The primary response is to update your Google Chrome software on all Mac endpoints to version 150.0.7871.47 or later. Since the flaw involves how the browser processes content, updating the application is the standard way to apply the corrected policy enforcement mechanisms. Infrastructure teams should prioritize identifying Mac assets and ensuring the latest browser version is deployed.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.