8.8
High
CVE-2026-8970 Privilege escalation in the Security component
Description
Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 151 | earliest → < 151 | 151 |
| Firefox 140.11 | earliest → < 140.11 | 140.11 |
| Thunderbird 151 | earliest → < 151 | 151 |
| Thunderbird 140.11 | earliest → < 140.11 | 140.11 |
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