How to update Teams without logging in

I am responsible for some thirty Windows 11 PCs and laptops. They all have Teams installed, I presume because that is what Windows does, but only about five users - not including me - have Teams accounts.

So how do I update Teams?

In particular, I am concerned about this vulnerability: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53783

I am using ESET Protect to tell me whether the vulnerability is present on a device.

The advisory itself has no security update, and just links to an article that says Teams will update itself. That has not happened.

Windows Update is no help. There has been one feature update and four quality updates since that advisory came out, and none have resolved the issue.

On some installs there is a three-dots button on the toolbar, and I can go to settings, and update from there. But the vulnerability is still there. Is it because Teams is installed on a per-user basis, and I am only updating one user?

Most installs do not have the three-dots button, and I would need to log in to do an update, which I cannot do without a Teams account.

Teams runs in the background, so users who have no Teams log in, who never use Teams, are (I assume) still vulnerable, because the out-of-date software is always running.

So how do I update Teams?