CVE-2025-4085
High
Description
An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Mozilla Firefox
PublishedApr 29, 2025
First seenApr 29, 2025
Weakness typeCWE-269Improper privilege management
How to fix
Update
- mozilla firefox138.0 or later
- mozilla thunderbird138.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 138.0 | 138.0 |
| mozilla thunderbird | v < 138.0 | 138.0 |
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