External risk intelligence

Chrome DevTools Information Disclosure Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-11250

This vulnerability is located in the browser's DevTools, a component primarily used by developers for debugging. It requires an attacker to have already compromised the renderer process and necessitates user interaction via a crafted HTML page, making it a client-side issue rather than a public-facing service or internet-exposed endpoint.

Use After Free

Google Chrome

before 149.0.7827.53

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

An implementation issue in Google Chrome's developer tools could allow an attacker who has already compromised a browser process to potentially expose sensitive information from memory by tricking a user into visiting a malicious webpage. This vulnerability is classified as low severity due to the high bar for exploitation, which requires prior compromise and specific user interaction.

Information disclosure in browser developer tools.
Primarily a developer tool, low exploitability.
Confirm relevance and exposure for development teams.

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 specially crafted HTML page. This action could expose sensitive information from the browser's process memory.

Requires prior renderer process compromise.
Triggered by visiting a crafted HTML page.
Risk of sensitive information disclosure.

Live Threat

Current exploitation, exposure, and threat context

When an attacker compromises the renderer process and presents a user with a crafted HTML page, they could potentially access sensitive information from the affected process's memory. This vulnerability specifically targets the DevTools component within Google Chrome.

Sensitive process memory could be accessed.
Via a crafted HTML page.
Information leakage from browser memory.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability, found in Chrome's DevTools, requires an attacker to first compromise the renderer process and then trick a user into visiting a malicious HTML page. This implies that platform or infrastructure teams responsible for managing Chrome deployments and security teams overseeing browser configurations should collaborate to identify affected systems and assess their exposure, especially if the compromised renderer process is a prerequisite. The immediate practical step is to determine if this specific component is in use and accessible, and then engage the relevant application or development teams to plan remediation.

Identify affected Chrome instances.
Verify DevTools usage and exposure.
Plan remediation with development teams.

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 DevTools?

DevTools is a built-in suite of web authoring and debugging tools integrated directly into the Google Chrome browser. Developers use these utilities to inspect, test, and troubleshoot the code of web applications in real-time. Since this component runs as part of the browser environment, it processes significant amounts of data, making its underlying implementation critical to overall browser memory security.

What does CVE-2026-11250 mean?

This CVE identifies a security weakness classified as CWE-416, which is a Use After Free vulnerability. In plain language, the software incorrectly manages memory, potentially allowing an attacker to access or manipulate data that should have been cleared. In this specific case, it enables the unauthorized disclosure of sensitive information contained within the browser's process memory.

How is this vulnerability triggered?

An attacker must first successfully compromise the browser's renderer process. Once that prerequisite is met, they must lure a user into visiting a specially crafted HTML page. Simply having the browser installed or using DevTools for normal web development does not trigger the bug; the combination of a prior process compromise and specific malicious user interaction is required.

Is this vulnerability internet-facing?

According to Halo Surface Signal, this is considered a client-side issue rather than a public-facing service. Because it requires a compromised renderer process and user interaction, it is unlikely to be triggered by remote, automated scanning of internet-exposed endpoints. The risk is primarily localized to the specific browser instance where a user is tricked into navigating to malicious content.

How do I fix CVE-2026-11250?

The primary response is to update your Google Chrome installation to version 149.0.7827.53 or later. Beyond applying updates, security teams should work with development departments to verify where older, vulnerable versions of the browser remain in use. Identifying these instances ensures that your organization can prioritize patching on systems where browser-based development work occurs.

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.