9.8
Critical
CVE-2026-4710 Incorrect boundary conditions in the Audio/Video component
Description
Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 149 | earliest → < 149 | 149 |
| Firefox 140.9 | earliest → < 140.9 | 140.9 |
| Thunderbird 149 | earliest → < 149 | 149 |
| Thunderbird 140.9 | earliest → < 140.9 | 140.9 |
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