CVE-2025-9180
High
Description
Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Mozilla Firefox
PublishedAug 19, 2025
First seenAug 19, 2025
Weakness typeCWE-346CWE-346
How to fix
Update
- mozilla firefox115.27.0, 142.0, 128.14.0, 140.2.0 or later
- mozilla thunderbird128.14.0, 142.0, 140.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 115.27.0, v < 142.0, 128.0 ≤ v < 128.14.0, 140.0 ≤ v < 140.2.0 | 115.27.0, 142.0, 128.14.0, 140.2.0 |
| mozilla thunderbird | v < 128.14.0, v < 142.0, 140.0 ≤ v < 140.2.0 | 128.14.0, 142.0, 140.2.0 |
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