Thunderbird
2,125 CVEs tracked. 14 of them are in CISA KEV.
This hub aggregates every CVE we track for Thunderbird, a product in the communications space. Use it to gauge the current risk picture and drill into individual advisories.
Thunderbird CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 23 |
| 2024-11 | 17 |
| 2024-12 | 0 |
| 2025-01 | 9 |
| 2025-02 | 13 |
| 2025-03 | 13 |
| 2025-04 | 24 |
| 2025-05 | 16 |
| 2025-06 | 12 |
| 2025-07 | 16 |
| 2025-08 | 7 |
| 2025-09 | 10 |
| 2025-10 | 11 |
| 2025-11 | 16 |
| 2025-12 | 13 |
| 2026-01 | 17 |
| 2026-02 | 51 |
| 2026-03 | 47 |
| 2026-04 | 50 |
| 2026-05 | 37 |
| 2026-06 | 42 |
| 2026-07 | 66 |
| 2026-08 | 55 |
| 2026-09 | 108 |
Severity
How the 2,125 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical729
- High687
- Medium683
- Low26
Latest CVEs
The 15 most recently published vulnerabilities affecting Thunderbird.
- CVE-2026-92240Out-of-bounds read in IMAP response parser9.1
- CVE-2026-92239Buffer overrun in IMAP8.1
- CVE-2026-92238Ambiguous parsing of mail headers9.8
- CVE-2026-92079Mitigation bypass in the Widget: Win32 component9.1
- CVE-2026-92078Denial-of-service in the Security component6.5
- CVE-2026-92077Denial-of-service in the SVG component6.5
- CVE-2026-92076Incorrect boundary conditions in the Networking component8.8
- CVE-2026-92075Mitigation bypass in the Networking component9.1
- CVE-2026-92074Mitigation bypass in the Popup Blocker component8.8
- CVE-2026-92073Privilege escalation in the Enterprise Policies component8.8
- CVE-2026-92072Incorrect boundary conditions in the Safe Browsing component8.0
- CVE-2026-92071Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component9.6
- CVE-2026-92070Information disclosure in the Networking component4.3
- CVE-2026-92069Spoofing issue in the DOM: Navigation component5.4
- CVE-2026-92068Site isolation issue in the Reader Mode component5.4
Product grouping is registry-driven, with AI assist and human review. How it works