# CVE-2026-124915: Firefox incorrect boundary conditions in Graphics: WebGPU

Source: https://junglewise.ai/threats/cve-2026-124915-incorrect-boundary-conditions-in-the-graphics-webgpu-component  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-124915 · Severity: info · Published 2026-11-10

Firefox is a widely used web browser that executes code from websites visited by users. Incorrect boundary conditions in the WebGPU graphics component could allow an attacker to trigger unexpected behavior or crashes through a malicious website, potentially leading to browser instability or data exposure.

Technologies: [Mozilla Firefox](https://junglewise.ai/threats/technologies/firefox), [Mozilla Firefox ESR](https://junglewise.ai/threats/technologies/firefox-esr). Vendors: [Mozilla](https://junglewise.ai/threats/vendors/mozilla).

## Quick answers

**Is CVE-2026-124915 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124915 being exploited in the wild.

**How severe is CVE-2026-124915?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Mozilla Firefox before 160; Mozilla Firefox ESR before 153.7.

**Is there a fix for CVE-2026-124915?** Yes: fixed in Firefox 160, Firefox ESR 153.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-124915 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-124915?** Check whether you run Mozilla Firefox or Mozilla Firefox ESR at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Firefox 160, Firefox ESR 153.7

## Technical details

An incorrect boundary condition vulnerability exists in the Graphics: WebGPU component of Firefox. This vulnerability is triggered when processing WebGPU graphics operations and could allow an attacker to exploit memory safety issues through network-based attack vectors (visiting a malicious website). The vulnerability was patched in Firefox 160 and Firefox ESR 153.7.

## Affected products

- Mozilla Firefox before 160
- Mozilla Firefox ESR before 153.7

## Timeline

- 2026-11-10: disclosed

## References

- [https://bugzilla.mozilla.org/show_bug.cgi?id=2056172](https://bugzilla.mozilla.org/show_bug.cgi?id=2056172)
- [https://www.mozilla.org/security/advisories/mfsa2026-125/](https://www.mozilla.org/security/advisories/mfsa2026-125/)

## Related threats

- [Firefox ESR use-after-free in Audio/Video component](https://junglewise.ai/threats/cve-2026-124952-use-after-free-in-the-audio-video-component-this-vulnerability)
- [Firefox privilege escalation in Nimbus Desktop Client](https://junglewise.ai/threats/cve-2026-124951-privilege-escalation-in-the-nimbus-desktop-client-component-this)
- [Firefox same-origin policy bypass in CSS Parsing and Computation](https://junglewise.ai/threats/cve-2026-124950-same-origin-policy-bypass-in-the-css-parsing-and-computation)
- [Firefox other issue in SVG component](https://junglewise.ai/threats/cve-2026-124949-other-issue-in-the-svg-component-this-vulnerability-was-fixed-in)
- [Mozilla Firefox use-after-free in Graphics component](https://junglewise.ai/threats/cve-2026-124948-incorrect-boundary-conditions-use-after-free-in-the-graphics)