External risk intelligence

Google Chrome Updater Use After Free Vulnerability Allows Sandbox Escape

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-14113

This vulnerability requires a remote attacker to have already compromised the renderer process of the client-side browser application. Because it is a client-side execution issue requiring prior exploitation of the browser's renderer, it does not represent a directly internet-exposed service or public-facing network surface.

Use After Free

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

This vulnerability affects Google Chrome on Windows, specifically impacting its update mechanism. While the direct exploit requires a prior compromise of the browser's renderer, the potential for a sandbox escape could allow an attacker to gain broader system access. The overall severity is rated low by Chromium's security team.

A Chrome update flaw could allow system escape.
Attack requires prior renderer compromise.
Focus on confirming relevance and exposure.

Attack Path

How an attacker could exploit the issue

An attacker could potentially escape the browser's sandbox by tricking a user into visiting a malicious webpage. This attack relies on the attacker having already gained control of the browser's renderer process, after which a specially crafted HTML page can trigger a use-after-free vulnerability in Chrome's updater component. Successful exploitation could allow the attacker to execute arbitrary code outside the sandbox.

Renderer process compromise required.
Crafted HTML page triggers vulnerability.
Sandbox escape for code execution.

Live Threat

Current exploitation, exposure, and threat context

A use-after-free vulnerability in Chrome's Updater on Windows could allow a sandbox escape when supported by a remote attacker who has already compromised the renderer process. This may enable an attacker to affect the behavior of the service.

System data could be at risk.
Via a crafted HTML page.
Potential for sandbox escape.

Operational Fix

Recommended remediation, mitigation, and detection steps

Given that this vulnerability affects Google Chrome on Windows and requires a compromised renderer process to exploit, the primary responsibility for remediation likely lies with teams managing end-user computing and browser security. This includes application owners responsible for Chrome deployments, infrastructure teams supporting end-user devices, and potentially security teams overseeing browser hardening. The immediate practical step is to identify all Windows endpoints running the affected Chrome versions, assess their internet-facing exposure and business criticality, and then coordinate remediation efforts with IT operations and potentially end-user support.

End-user computing and browser security teams.
Verify Chrome version and reachability.
Plan phased rollout and user communication.

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.

Free EASM Trial See How Signal Works

Frequently asked questions

What is the Google Chrome Updater component?

The Updater is a background service within Google Chrome on Windows that periodically checks for, downloads, and applies software updates. It operates with higher system privileges than the browser itself to ensure it can modify application files. Because it performs these elevated tasks, vulnerabilities in this component are a point of interest for security researchers focusing on system integrity.

What does the CWE-416 use-after-free weakness mean in CVE-2026-14113?

A use-after-free weakness occurs when software continues to use a memory location after that memory has been cleared or released. In this specific case, the Chrome Updater mistakenly interacts with memory that is no longer valid. If an attacker can manipulate this memory, they may be able to redirect the program's logic to execute unauthorized commands or gain deeper access to the underlying operating system.

How does an attacker trigger this vulnerability?

This vulnerability is not triggered by simply visiting a website. It requires the attacker to first successfully compromise the browser's renderer process. Once they have that initial foothold, they must then use a specially crafted HTML page to interact with the Updater component. If the renderer is not already compromised, this specific path to exploit the sandbox escape does not function.

Is CVE-2026-14113 an internet-facing risk?

According to Halo Surface Signal, this is very unlikely to be an internet-exposed service risk. Because the bug requires a prior compromise of the client-side renderer process, it is not a direct network-accessible entry point. The vulnerability is tied to the local execution environment on the Windows device rather than an open network service that can be scanned or reached directly from the internet.

How should I respond to CVE-2026-14113?

The primary response is to ensure your Windows workstations are running a version of Google Chrome newer than 150.0.7871.47. Since this requires prior renderer compromise, focus on standard security hygiene like keeping the browser updated and ensuring users avoid high-risk browsing behavior. Coordinate with your IT or end-user computing teams to verify that your organization's deployment of Chrome is updated to the patched release.

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.