External risk intelligence

Use-after-free in ANGLE Graphics Engine in Google Chrome

CVE advisorySeverity: CRITICAL (CVSS 9.6)

CVE-2026-126842

This vulnerability is located within the ANGLE graphics engine of a client-side web browser. Exploitation requires a user to navigate to a specifically crafted HTML page. Because it is a client-side component dependent on user interaction rather than a public-facing service, API, or edge gateway, it does not represent an exposed network-accessible surface in common deployment patterns.

Use After Free

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 vulnerability has been identified in ANGLE, a component within Google Chrome, which could allow remote attackers to execute code. This is due to a use-after-free flaw that can be triggered by a specially crafted HTML page, potentially leading to code execution outside the browser's protected environment.

  • Flaw in browser graphics component.
  • Affects code execution outside sandbox.
  • Confirm relevance and exposure.

Attack Path

How an attacker could exploit the issue

A remote attacker could trick a user into visiting a malicious webpage, which then targets a use-after-free flaw within the ANGLE graphics engine in Google Chrome. Successful exploitation could allow an attacker to execute code with elevated privileges outside the browser's security sandbox.

  • Entry condition: No special access needed.
  • Trigger point: User visits crafted HTML page.
  • Resulting risk: Code execution outside sandbox.

Live Threat

Current exploitation, exposure, and threat context

A use-after-free vulnerability in ANGLE, a component of Google Chrome, could allow a remote attacker to execute arbitrary code outside the browser's sandbox. This may occur when a user visits a specially crafted HTML page, potentially impacting the user's system.

  • Arbitrary code execution.
  • Malicious HTML page.
  • Compromise of the user's system.

Operational Fix

Recommended remediation, mitigation, and detection steps

This "use after free" vulnerability in ANGLE, affecting Google Chrome, requires action from teams responsible for end-user computing environments, potentially including desktop support, endpoint management, and security operations. The immediate priority is to confirm the presence of affected Chrome versions across the organization, assess their exposure through user interaction with malicious web content, and identify business-critical systems where such an exploit could have significant impact. Planning for remediation should then be risk-based.

  • Confirm end-user device inventory and Chrome versions.
  • Verify user exposure to malicious crafted HTML pages.
  • Plan phased updates based on asset criticality.

Supplementary metadata

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.

Frequently asked questions

What is the ANGLE component in Google Chrome?

ANGLE is an open-source graphics engine abstraction layer integrated into Google Chrome. It translates high-level graphics calls from web content into the specific APIs supported by a user's underlying hardware, such as DirectX or OpenGL. It enables web developers to build hardware-accelerated 3D content and games that run consistently across different operating systems and graphics cards.

How does this use-after-free vulnerability work?

This is a memory management weakness categorized as CWE-416. It occurs when a program continues to use a pointer to a memory location after that memory has been freed or deallocated. In the context of CVE-2026-126842, an attacker can manipulate this state to trick the browser into executing arbitrary code by accessing that 'dangling' memory.

What is required to trigger CVE-2026-126842?

Exploitation requires a user to navigate to a specifically crafted HTML page designed to trigger the flaw. Simply having the browser installed or running in the background does not trigger the vulnerability. The bug is not triggered by standard, legitimate web browsing or by network traffic that does not involve rendering malicious page content.

Is my organization at high risk from this CVE?

According to Halo Surface Signal, this risk is very unlikely because the bug resides in a client-side browser component. It does not exist on public-facing servers, APIs, or edge gateways. Risk is tied strictly to end-user systems where employees browse the web, rather than to your infrastructure's network-accessible services.

How should I respond to this threat?

Your primary step is to ensure that end-user devices are updated to Google Chrome version 157.0.8103.78 or later, which contains the fix. Use your endpoint management tools to identify and update any outdated browser installations across your organization, prioritizing systems used by high-risk users who frequently access external web content.

References