CVE-2020-35112
High
Description
If a user downloaded a file lacking an extension on Windows, and then "Open"-ed it from the downloads panel, if there was an executable file in the downloads directory with the same name but with an executable extension (such as .bat or .exe) that executable would have been launched instead. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedJan 7, 2021
First seenJan 7, 2021
How to fix
Update
- mozilla firefox84.0 or later
- mozilla firefox_esr78.6.0 or later
- mozilla thunderbird78.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 84.0 | 84.0 |
| mozilla firefox_esr | v < 78.6.0 | 78.6.0 |
| mozilla thunderbird | v < 78.6.0 | 78.6.0 |
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