# CVE-2026-124947: Firefox incorrect boundary conditions in Graphics component

Source: https://junglewise.ai/threats/cve-2026-124947-incorrect-boundary-conditions-in-the-graphics-component-this  
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-2026-124947 · Severity: info · Published 2026-11-10

Firefox's Graphics component contains incorrect boundary condition checks that could allow an attacker to trigger memory corruption. This could lead to browser crashes, information disclosure, or arbitrary code execution when a user visits a malicious website or views crafted content.

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

## Quick answers

**Is CVE-2026-124947 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124947 being exploited in the wild.

**How severe is CVE-2026-124947?** Informational severity, published 10 November 2026.

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

**Is there a fix for CVE-2026-124947?** Yes: fixed in Firefox 160. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-124947 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-124947?** Check whether you run Mozilla Firefox 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

## Technical details

The vulnerability is an incorrect boundary condition flaw in Firefox's Graphics rendering component. Attack requires the user to interact with malicious web content, with the network as the attack vector. Successful exploitation could result in memory corruption, information disclosure, or arbitrary code execution within the browser's security context.

## Affected products

- Mozilla Firefox prior to 160

## Timeline

- 2026-11-10: disclosed

## References

- [https://bugzilla.mozilla.org/show_bug.cgi?id=2081249](https://bugzilla.mozilla.org/show_bug.cgi?id=2081249)
- [https://www.mozilla.org/security/advisories/mfsa2026-125/](https://www.mozilla.org/security/advisories/mfsa2026-125/)

## Related threats

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- [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)
- [Firefox invalid pointer in JavaScript Engine JIT component](https://junglewise.ai/threats/cve-2026-124946-invalid-pointer-in-the-javascript-engine-jit-component-this)