One of the World`s Most Popular Web Browsers for Windows

Firefox 39.0.3

August, 7th 2015 - 39.16 MB - Open Source

Free Download

Security Status

Latest Version

Firefox 125.0.1 (32-bit)
Operating System

Windows XP / XP64 / Vista / Vista64 / Windows 7 / Windows 7 64 / Windows 8 / Windows 8 64
User Rating

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Author / Product

Mozilla Organization / External Link
Filename

Firefox Setup 39.0.3.exe
MD5 Checksum

7b61c5c46753f66af87bd68c5babb4c5

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system. Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Firefox 39.0.3.

For those interested in downloading the most recent release of Firefox (32-bit) or reading our review, simply click here.

All old versions distributed on our website are completely virus-free and available for download at no cost.

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Download Firefox 39.0.3

Firefox 39.0.3 Screenshots

The images below have been resized. Click on them to view the screenshots in full size.

What's new in this version:

Various security fixes:
- Same origin violation and local file stealing via PDF reader - a way to violate the same origin policy and inject script into a non-privileged part of the built-in PDF Viewer. This would allow an attacker to read and steal sensitive local files on the victim's computer.