JIT Miscompilation in JavaScript Engine for Mozilla Firefox
CVE-2026-16410

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 21 July 2026

What is CVE-2026-16410?

The JIT miscompilation vulnerability in the JavaScript engine of Mozilla Firefox could potentially lead to unexpected behavior during code execution. This flaw, which was addressed in Firefox version 153, highlights the importance of keeping software updated to mitigate risks associated with execution errors that arise from Just-In-Time compilation processes.

Affected Version(s)

Firefox 153

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2053680

https://www.mozilla.org/security/advisories/mfsa2026-68/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jul 21, 2026
Vulnerability Reserved
Jul 20, 2026

Credit

Amy Burnett of OpenAI

CVE-2026-16410 Data

JSON