External risk intelligence

WebGPU Boundary Condition Flaw in Firefox

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-13022

This vulnerability affects the WebGPU component within a web browser. Browsers are client-side software applications. While they interact with the internet, they are not deployed as internet-facing services, gateways, or public-facing infrastructure, making this exposure profile distinct from server-side or network-edge services.

Mozilla Firefox

before 145.0

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 critical vulnerability has been identified in Mozilla's Firefox browser, specifically within its WebGPU component. This issue could allow for significant compromise of confidentiality, integrity, and availability if exploited. Given its critical severity and the widespread use of Firefox, understanding its potential relevance to our organization is important.

Flaw in browser's graphics processing.
Affects how the browser handles visual data.
Confirm relevance and assess exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this flaw by sending specially crafted data to a user's browser. If the browser processes this data, it could lead to a crash or allow an attacker to execute arbitrary code.

Requires network access.
Triggered by processing malicious data.
Leads to code execution or crash.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in the WebGPU component could allow an attacker to affect the stability and integrity of the affected application. This could lead to unexpected behavior or crashes when processing specific graphical commands.

Affected application: Firefox
Exposure: Maliciously crafted web content
Consequence: Application instability or crashes

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability affects the Graphics: WebGPU component in Firefox. The application owner, in coordination with the platform or infrastructure team, is likely responsible for identifying and addressing this issue. The first practical step is to locate all instances of the affected technology, confirm its accessibility, and understand its business criticality to prioritize remediation efforts.

Application owners should manage this vulnerability.
Verify affected product and scope.
Plan remediation based on risk.

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 the WebGPU component in Firefox?

WebGPU is a modern web standard built into Firefox that allows websites to use your computer's graphics card (GPU) for high-performance tasks. It is primarily used for complex 3D rendering, gaming, and machine learning directly within your browser. By offloading these calculations from the main processor to the graphics hardware, WebGPU enables smoother visuals and faster computation for interactive web applications.

What does CWE-703 mean for CVE-2025-13022?

CVE-2025-13022 is classified under CWE-703, which refers to improper check or handling of exceptional conditions. In this specific case, it means the WebGPU component fails to correctly validate the boundaries of data it processes. Because the browser does not properly define these limits, it may attempt to access or process memory outside of its intended scope, leading to instability or security risks.

How is this WebGPU vulnerability triggered?

This flaw is triggered when the browser processes specially crafted graphical data provided by a website. If you visit a page designed to deliver malicious commands to the WebGPU component, the browser may crash or run unauthorized code. Importantly, this is not triggered by standard web browsing or routine GPU-accelerated tasks; it requires the specific, intentional delivery of malformed graphical input to force the error.

Is my local Firefox installation at risk?

According to Halo Surface Signal, this vulnerability affects client-side browser software rather than server-side infrastructure. While it is technically reachable via the internet when you visit a malicious site, it does not function as an internet-facing service or gateway. The risk is localized to the specific user's machine if they interact with malicious content, rather than representing a broad network-level exposure.

When should I update Firefox to fix CVE-2025-13022?

You should update to version 145 or later as soon as possible. Because this flaw allows for significant compromise of your browser's security, applying the update is the only effective way to address the underlying boundary condition error. Confirm your current version in the browser settings and allow the automatic update process to reach version 145 or newer to ensure the patch is applied.

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.