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CVE-2025-6435
Published: Jun 24, 2025
Modified: Apr 13, 2026
PUBLISHED
Description
If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability was fixed in Firefox 140 and Thunderbird 140.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Firefox | unaffected 140 - <= * |
Mozilla | Thunderbird | unaffected 140 - <= * |
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