External risk intelligence

Google Chrome DevTools Memory Corruption Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-113186

This vulnerability exists within the DevTools component of a web browser. While it requires the user to process a crafted HTML page, DevTools is a developer-focused utility primarily used for debugging and inspection. It is not a standard internet-facing service or appliance, and typical deployment does not involve exposing DevTools to remote attackers over the public internet.

Memory Corruption

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A memory corruption vulnerability has been identified in Google Chrome's developer tools. This issue could allow a remote attacker to execute code outside the browser's security sandbox by tricking a user into visiting a malicious web page. While the reported severity is low, the potential for code execution warrants awareness.

Flaw in developer tools allows code execution.
Potential for unauthorized code runs needs verification.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could trick a user into visiting a malicious webpage that contains specially crafted code. This code targets a flaw in Chrome's DevTools, which, when processed by the browser, could allow the attacker to execute commands on the user's computer, potentially bypassing security restrictions.

User must visit a malicious webpage.
Vulnerable DevTools component is triggered.
Arbitrary code execution outside sandbox.

Live Threat

Current exploitation, exposure, and threat context

When supported by the advisory, a vulnerability in DevTools within Google Chrome could allow a remote attacker to execute arbitrary code outside the sandbox by tricking a user into visiting a malicious HTML page.

Arbitrary code execution.
User visits a crafted HTML page.
Compromise of user system.

Operational Fix

Recommended remediation, mitigation, and detection steps

The DevTools component within Google Chrome is the affected technology. Given its function, ownership typically resides with application owners or development teams responsible for browser deployments, with potential involvement from infrastructure or security teams for broader network exposure and risk assessment. The initial practical step is to confirm the presence and reachability of affected Chrome versions, identify their accountable owners, and then prioritize remediation based on criticality and exposure.

Ownership likely by application or development teams.
Verify Chrome browser deployment and reachability.
Plan remediation based on risk and criticality.

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 included in the Google Chrome browser. Developers use this interface to inspect elements, test network performance, and troubleshoot code directly within the browser environment. It is a fundamental component for web development rather than an external-facing server or network application.

What does CVE-2026-113186 mean by memory corruption?

This vulnerability, classified as CWE-119, occurs when the software does not properly manage memory while handling data. In this specific case, it allows an attacker to interact with the system's memory in unintended ways. If successfully triggered, it can lead to arbitrary code execution, meaning the software might run commands dictated by the attacker rather than performing its intended browser functions.

How is this vulnerability triggered?

The flaw is triggered when a user is convinced to visit a specially crafted HTML page while the browser processes that content. It does not activate through standard browser usage or by simply having the software installed. The attack requires the user to load malicious web content that specifically exploits the DevTools component's handling of that page's data.

Is my system at risk?

According to Halo Surface Signal, this risk is unlikely because DevTools is a developer-focused utility, not a standard internet-facing service. Because the tool is not designed to be exposed to public network requests, it does not typically present a direct target for remote attackers in the same way a web server would. Most users are not actively using DevTools while browsing the open web.

What should I do to address this issue?

The first step is to verify which versions of Chrome are currently deployed across your environment to identify potentially affected installations. Coordinate with development or application teams who manage browser configurations to ensure timely updates are applied. Since this involves a browser component, focus on standard patching cycles to transition to a version that addresses the memory corruption 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.