CVE-2025-14323
High
Description
Privilege escalation in the DOM: Notifications component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedDec 9, 2025
First seenDec 9, 2025
How to fix
Update
- mozilla firefox115.31.0, 146.0, 140.6.0 or later
- mozilla thunderbird140.6.0, 146.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 115.31.0, v < 146.0, 116.0 ≤ v < 140.6.0 | 115.31.0, 146.0, 140.6.0 |
| mozilla thunderbird | v < 140.6.0, v < 146.0 | 140.6.0, 146.0 |
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