CVE-2025-49710
Critical
Description
An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedJun 11, 2025
First seenJun 11, 2025
Weakness typeCWE-190Integer overflow
How to fix
Update
- mozilla firefox139.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 139.0.4 | 139.0.4 |
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