medium6.5
CVE-2026-84138
Denial-of-service in the PDF Viewer component.
Impact
Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 155.0.0 |
| Mozilla | Thunderbird | before 155.0 |