macOS · Mozilla
Mozilla Thunderbird security updates
The latest version of Mozilla Thunderbird is 159.0, released October 26, 2026. Patch Radar has 8 security fixes for Mozilla Thunderbird, closing 358 CVEs. The newest is Mozilla Thunderbird 157.0 (157.0), released September 28, 2026.
Latest version
159.0
Released Oct 26, 2026
Security fixes
8
On record in Patch Radar
CVEs
358
Closed by those fixes
Exploited
0
Vendor report or CISA KEV
Security fixes, newest first
| Priority | Fix | Fixed in | CVEs | Exploited | Released |
|---|---|---|---|---|---|
| Urgent | Mozilla Thunderbird 157.0 | 157.0 | 76 | Sep 28, 2026 | |
| Urgent | Mozilla Thunderbird 156.0 | 156.0 | 73 | Sep 10, 2026 | |
| Urgent | Mozilla Thunderbird 155.0 | 155.0 | 31 | Aug 28, 2026 | |
| Urgent | Mozilla Thunderbird 154.0 | 154.0 | 56 | Aug 17, 2026 | |
| Urgent | Mozilla Thunderbird 153.0 | 153.0 | 53 | Jul 16, 2026 | |
| Routine | Mozilla Thunderbird 152.0.1 | 152.0.1 | 2 | Jun 30, 2026 | |
| Urgent | Mozilla Thunderbird 152.0 | 152.0 | 40 | Jun 11, 2026 | |
| Urgent | Mozilla Thunderbird 151.0.1 | 151.0.1 | 27 | May 22, 2026 |