External risk intelligence

Chrome Sandbox Escape Vulnerability on macOS

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-14097

The vulnerability exists in the web browser client-side rendering process. While the attack requires the user to visit a crafted HTML page, web browsers are inherently designed to interact with the public internet. However, since the attack requires user interaction and exploitation of the renderer rather than targeting a server-side internet-facing service, it is classified as possible.

Google Chrome

before 150.0.7871.47

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This vulnerability, related to Google Chrome on Mac, involves a potential sandbox escape that could allow an attacker, after compromising the renderer process, to execute code outside of its intended limitations via a malicious webpage. While the security severity is rated as Low by Chromium, the potential for a sandbox escape warrants attention to confirm relevance and exposure to our environment.

Flaw allows escaped browser code.
High-impact risk requires careful review.
Confirm if our systems are exposed.

Attack Path

How an attacker could exploit the issue

An attacker who has already compromised the renderer process can trick a user into visiting a malicious HTML page. This allows them to escape the browser's sandbox, potentially leading to further compromise of the user's system.

Renderer process compromise is required.
Triggered by visiting a crafted HTML page.
Risk of sandbox escape.

Live Threat

Current exploitation, exposure, and threat context

A sandbox escape could allow an attacker to access system resources or data beyond the browser's intended limitations. This could occur when a user visits a malicious HTML page, potentially leading to broader system compromise when supported by the advisory.

Renderer process data and system resources.
Visiting a malicious HTML page.
Broader system compromise.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Platform and Security teams are likely responsible for addressing this vulnerability in Chrome on macOS. The first practical step is to identify all endpoints running the affected browser version, confirm their internet reachability and business criticality, and then determine the accountable owner for remediation planning.

Platform teams own the issue.
Verify browser exposure and criticality.
Plan risk-based remediation.

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 on macOS and how is it used?

Google Chrome is a web browser used to access internet content and run web applications. On macOS, it relies on a multi-process architecture to isolate individual tabs and extensions from the underlying operating system. This isolation, known as a sandbox, is intended to prevent malicious websites from accessing sensitive system data or executing unauthorized commands on your computer.

What is the vulnerability in CVE-2026-14097?

This vulnerability is classified as CWE-693, which involves a failure to use, or the improper use of, effective protection mechanisms. In this case, an implementation flaw in how Chrome manages web app installations on Mac allows a process that has already been compromised to bypass the browser's sandbox. It essentially weakens the security barrier that normally keeps browser activity separate from your broader system operations.

How can an attacker trigger this vulnerability?

To trigger this, an attacker must first successfully compromise the browser's renderer process. Once that occurs, they need a user to navigate to a specifically crafted HTML page. Simply having the browser installed is not enough; the vulnerability does not trigger if a user avoids interacting with malicious or untrusted web content that is designed to exploit the renderer process.

Who should be concerned about this CVE-2026-14097?

Anyone running Chrome on macOS is potentially affected. According to Halo Surface Signal, this is classified as 'Possible' because it depends on user interaction with a malicious page rather than an automated attack against a server. Users who frequently browse untrusted sites are at higher risk, as the browser is constantly interacting with the public internet and processing complex, potentially malicious web content.

How do I address this Chrome security issue?

Your first step is to identify all macOS endpoints within your environment that are running Chrome versions earlier than 150.0.7871.47. Once identified, verify which systems use the browser for business-critical tasks or internet-facing workflows. Coordinate with your platform or IT teams to ensure the browser is updated to the latest version, which contains the fix for this sandbox escape flaw.

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.