8.1
High
CVE-2025-6435 If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 140 | earliest → < 140 | 140 |
| Thunderbird 140 | earliest → < 140 | 140 |
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