9.6
Critical
CVE-2026-7321 Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component
Description
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 150 | earliest → < 150 | 150 |
| Firefox 140.10 | earliest → < 140.10.1 | 140.10.1 |
| Thunderbird 150 | earliest → < 150 | 150 |
| Thunderbird 140.10 | earliest → < 140.10.1 | 140.10.1 |
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