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Thunderbird for Mac

Thunderbird 45.6.0

  -  74 MB  -  Open Source

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 Thunderbird 45.6.0.

For those interested in downloading the most recent release of Thunderbird 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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  • Thunderbird 45.6.0 Screenshots

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    Thunderbird 45.6.0 Screenshot 1
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  • Thunderbird 45.6.0 Screenshot 3
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What's new in this version:

- The system integration dialog was shown every time when starting Thunderbird

Various security fixes:
CVE-2016-9899: Use-after-free while manipulating DOM events and audio elements:
- Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption

CVE-2016-9895: CSP bypass using marquee tag:
- Event handlers on marquee elements were executed despite a strict Content Security Policy (CSP) that disallowed inline JavaScript

CVE-2016-9897: Memory corruption in libGLES:
- Memory corruption resulting in a potentially exploitable crash during WebGL functions using a vector constructor with a varying array within libGLES

CVE-2016-9898: Use-after-free in Editor while manipulating DOM subtrees:
- Use-after-free resulting in potentially exploitable crash when manipulating DOM subtrees in the Editor

CVE-2016-9900: Restricted external resources can be loaded by SVG images through data URLs:
- External resources that should be blocked when loaded by SVG images can bypass security restrictions through the use of data: URLs. This could allow for cross-domain data leakage

CVE-2016-9904: Cross-origin information leak in shared atoms:
- An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as usernames embedded in JavaScript code, across websites

CVE-2016-9905: Crash in EnumerateSubDocuments:
- A potentially exploitable crash in EnumerateSubDocuments while adding or removing sub-documents

CVE-2016-9893: Memory safety bugs fixed in Thunderbird 45.6:
- Mozilla developers and community members Jan de Mooij, Iris Hsiao, Christian Holler, Carsten Book, Timothy Nikkel, Christoph Diehl, Olli Pettay, Raymond Forbes, and Boris Zbarsky reported memory safety bugs present in in Thunderbird ESR 45.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code