# CVE-2026-124932: Firefox use-after-free in Graphics component

Source: https://junglewise.ai/threats/cve-2026-124932-use-after-free-in-the-graphics-component-this-vulnerability-was  
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-2026-124932 · Severity: info · Published 2026-11-10

Firefox, a web browser used by millions worldwide, contains a use-after-free vulnerability in its Graphics component that could allow an attacker to execute arbitrary code or crash the browser. An exploit of this flaw could lead to account takeover, data theft, or unauthorized access to system resources. Mozilla has patched this vulnerability in Firefox 160 and Firefox ESR 153.7.

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-2026-124932 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124932 being exploited in the wild.

**How severe is CVE-2026-124932?** Informational severity, published 10 November 2026.

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

**Is there a fix for CVE-2026-124932?** 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-2026-124932 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-124932?** 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

A use-after-free condition exists in Firefox's Graphics component, allowing an attacker to reference memory that has been freed. The vulnerability can be triggered through malicious web content delivered via network attack vector, requiring no user authentication but likely requiring user interaction (visiting a crafted webpage). Successful exploitation could result in arbitrary code execution within the browser process.

## Affected products

- Mozilla Firefox prior to 160
- Mozilla Firefox ESR prior to 153.7

## Timeline

- 2026-11-10: disclosed

## References

- [https://bugzilla.mozilla.org/show_bug.cgi?id=2084555](https://bugzilla.mozilla.org/show_bug.cgi?id=2084555)
- [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)