# CVE-2026-92021

## Summary

- **CVE ID:** CVE-2026-92021
- **Severity:** UNKNOWN
- **CVSS Score:** 0
- **CWE:** N/A
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 16, 2026

## Description

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16.

## Affected Products

- Mozilla — Firefox (140.16)
- Mozilla — Thunderbird (140.16)

## References

- [CNA](https://bugzilla.mozilla.org/show_bug.cgi?id=2067208)
- [CNA](https://www.mozilla.org/security/advisories/mfsa2026-92/)
- [CNA](https://www.mozilla.org/security/advisories/mfsa2026-95/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.15%
- **EPSS Percentile:** 4.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._