5.3
Medium
CVE-2026-12308 Memory safety bug fixed in Thunderbird 152
Description
Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 152 | earliest → < 152 | 152 |
| Firefox 140.12 | earliest → < 140.12 | 140.12 |
| Thunderbird 152 | earliest → < 152 | 152 |
| Thunderbird 140.12 | earliest → < 140.12 | 140.12 |
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