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Firefox browser nightly builds
$ winget install --id Mozilla.Firefox.Nightly.MSIX --exact --version 155.2607.2809.0Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.
Mozilla Firefox (MSIX) Nightly uses MSIX. The silent install switches are (no switches needed).
Add-AppxPackage -Path .\firefox-155.0a1.multi.win64.installer.msix
See the full silent install reference for Mozilla Firefox (MSIX) Nightly →
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Firefox is a free and open-source web browser developed by the Mozilla Foundation. Nightly provides the latest development patches and fixes, before they are introduced into other stable versions.
Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.
25 known CVEs via NVD
Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153, Firefox ES...
Memory safety bugs present in Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
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.