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Mozilla Thunderbird Beta (MSIX)

by Mozillav148.0.6

Last updated

A free and open source email, newsfeed, chat, and calendaring client that is easy to set up.

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Install with winget

$ winget install --id Mozilla.Thunderbird.Beta.MSIX --exact --version 148.0.6

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

Silent install command for Mozilla Thunderbird Beta (MSIX)

Mozilla Thunderbird Beta (MSIX) uses MSIX. The silent install switches are (no switches needed).

One-line silent install (x64)
Add-AppxPackage -Path .\Thunderbird%20Setup%20148.0b6.msix

See the full silent install reference for Mozilla Thunderbird Beta (MSIX) →

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Installers · v148.0.6

ArchitectureTypeScopeInstallDownload
x64MSIX-Direct

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

Security

25 known CVEs via NVD

  • medium4.3Fix in v153.4.0CVE-2026-96869affects before 140.17.0, 153.4.0, 157.0Sep 29, 2026

    Information disclosure in the Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.

    Vendor advisory
  • high8.8Fix in v153.4.0CVE-2026-100832affects before 140.17.0, 153.4.0Sep 29, 2026

    Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 140.17, Thunderbird 153.4, Firefox ESR 115.42, and Firefox ESR 140.17.

    Vendor advisory
  • high8.8Fix in v153.4.0CVE-2026-100820affects before 140.17.0, 153.4.0, 157.0Sep 29, 2026

    Privilege escalation in the Address Bar component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.

    Vendor advisory
  • critical9.6Fix in v153.4.0CVE-2026-100819affects before 140.17.0, 153.4.0, 157.0Sep 29, 2026

    Sandbox escape due to incorrect boundary conditions in the XPCOM component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

    Vendor advisory
  • critical9.6Fix in v153.4.0CVE-2026-100818affects before 140.17.0, 153.4.0, 157.0Sep 29, 2026

    Sandbox escape due to use-after-free in the Widget: Gtk component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.

    Vendor advisory
  • medium5.4Fix in v157.0CVE-2026-100817affects before 157.0Sep 29, 2026

    Other issue in the JavaScript: WebAssembly component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.

    Vendor advisory
  • high8.1Fix in v153.4.0CVE-2026-100816affects before 153.4.0, 157.0Sep 29, 2026

    Site isolation issue in the DOM: Networking component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

    Vendor advisory
  • high8.8Fix in v153.4.0CVE-2026-100815affects before 153.4.0, 157.0Sep 29, 2026

    Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

    Vendor advisory
Showing 8 of 25. Source: NVD, updated 2h ago. Patch status is best-effort: NVD's fix version is compared against the latest version in winget, but the two version formats don't always align. Confirm with the vendor advisory before treating any specific build as safe.

See a CVE that affects your fleet? Push the patched version to Intune in one click with Pckgr - automated patching is the only way to keep up.

Not on Intune? Patch it with Pckgr RMM, free for up to 5 devices.

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More from Mozilla or browse calendar, elementio, email.

Frequently asked questions

How do I install Mozilla Thunderbird Beta (MSIX) on Windows?
Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id Mozilla.Thunderbird.Beta.MSIX --exact --version 148.0.6. winget downloads the installer from Mozilla and runs it. Requires Windows 10 (1809+) or Windows 11.
How do I install Mozilla Thunderbird Beta (MSIX) silently for unattended deployment?
Add --silent and accept the agreements upfront: winget install --id Mozilla.Thunderbird.Beta.MSIX --exact 148.0.6 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.
What are the silent install switches for Mozilla Thunderbird Beta (MSIX)?
Mozilla Thunderbird Beta (MSIX) uses MSIX. MSIX packages install silently by default - no switches are needed (Add-AppxPackage -Path .\Thunderbird%20Setup%20148.0b6.msix).
How do I uninstall Mozilla Thunderbird Beta (MSIX) via winget?
Run: winget uninstall --id Mozilla.Thunderbird.Beta.MSIX --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from Mozilla Thunderbird Beta (MSIX)'s Apps & Features entry.
Is Mozilla Thunderbird Beta (MSIX) free?
Mozilla Thunderbird Beta (MSIX) is distributed under MPL-2.0. Refer to the publisher (https://support.mozilla.org/kb/thunderbird-beta) for the full license terms - Wingetly itself does not charge for installation.
Does Mozilla Thunderbird Beta (MSIX) work on Windows 10?
Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls Mozilla Thunderbird Beta (MSIX) directly from the publisher.
How do I keep Mozilla Thunderbird Beta (MSIX) up to date?
Run winget upgrade --id Mozilla.Thunderbird.Beta.MSIX --exact, or winget upgrade --all to update everything winget tracks. We index 1 version of Mozilla Thunderbird Beta (MSIX) from microsoft/winget-pkgs.