# CVE-2026-92239

## Summary

- **CVE ID:** CVE-2026-92239
- **Severity:** UNKNOWN
- **CVSS Score:** 0
- **CWE:** N/A
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 16, 2026

## Description

A maliciously constructed IMAP line could cause an out-of-bounds buffer read. This vulnerability was fixed in Thunderbird 156 and Thunderbird 140.16.

## Affected Products

- Mozilla — Thunderbird (140.16)
- Mozilla — Thunderbird (156)
- Mozilla — Thunderbird (153.3)

## References

- [CNA](https://bugzilla.mozilla.org/show_bug.cgi?id=2060488)
- [CNA](https://www.mozilla.org/security/advisories/mfsa2026-94/)
- [CNA](https://www.mozilla.org/security/advisories/mfsa2026-95/)
- [CNA](https://www.mozilla.org/security/advisories/mfsa2026-96/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.9

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._