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Firefox for Mac

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Download Firefox 45.0

Firefox 45.0

  -  80.6 MB  -  Freeware

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 45.0.


For those interested in downloading the most recent release of Firefox for Mac 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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  • Firefox 45.0 Screenshots

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

What's new in this version:

New:
- Instant browser tab sharing through Hello
- Tabs synced via Firefox Accounts from other devices are now shown in dropdown area of Awesome Bar when searching
- Synced Tabs button in button bar
- Introduce a new preference (network.dns.blockDotOnion) to allow blocking .onion at the DNS level
- Guarani [gn] locale added

Fixed:
- URLs containing a Unicode-format Internationalized Domain Name (IDN) are now properly redirected
- Various security fixes

Changed:
- Tab Groups (Panorama) feature removed

Developer:
- Ability to filter snapshot output in memory tool
- Fine tune animations by changing the playback rate of animations in the animation-inspector's timeline
- DOMContentLoaded and load events shown in the network monitor timeline
- Added Negative url filtering for the network monitor
- Support for diffing heap snapshots added to the memory tool
- Inspector search now matches results from all content in the page, including subframes
- List of animated properties and keyframes is now displayed when clicking on an animation in the animation-inspector’s timeline

HTML5:
- Push API support, part of Progressive Web Applications
- Support delivery of a Content Security Policy (CSP) via a meta tag
- Web Speech synthesis API
- ES6 Classes

Security fixes:
- 2016-37 Font vulnerabilities in the Graphite 2 library
- 2016-36 Use-after-free during processing of DER encoded keys in NSS
- 2016-35 Buffer overflow during ASN.1 decoding in NSS
- 2016-34 Out-of-bounds read in HTML parser following a failed allocation
- 2016-33 Use-after-free in GetStaticInstance in WebRTC
- 2016-32 WebRTC and LibVPX vulnerabilities found through code inspection
- 2016-31 Memory corruption with malicious NPAPI plugin
- 2016-30 Buffer overflow in Brotli decompression
- 2016-29 Same-origin policy violation using perfomance.getEntries and history navigation with session restore
- 2016-28 Addressbar spoofing though history navigation and Location protocol property
- 2016-27 Use-after-free during XML transformations
- 2016-26 Memory corruption when modifying a file being read by FileReader
- 2016-25 Use-after-free when using multiple WebRTC data channels
- 2016-24 Use-after-free in SetBody
- 2016-23 Use-after-free in HTML5 string parser
- 2016-22 Service Worker Manager out-of-bounds read in Service Worker Manager
- 2016-21 Displayed page address can be overridden
- 2016-20 Memory leak in libstagefright when deleting an array during MP4 processing
- 2016-18 CSP reports fail to strip location information for embedded iframe pages
- 2016-17 Local file overwriting and potential privilege escalation through CSP reports
- 2016-16 Miscellaneous memory safety hazards (rv:45.0 / rv:38.7)

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