cPanel have published https://support.cpanel.net/hc/en-us/articles/40073787579671-Critical-Vulnerability-with-cPanel-WHM-Login-Authentication
In response we have shut down cpdavd on all shared and managed dedicated cPanel servers for the time being.
You will NOT be able to login to cPanel (port 2083) WHM (port 2087) Webmail (port 2096)
This is likely to remain the case overnight; we will review in the morning to see if cPanel has released a suitable patch.
We appreciate this will be disruptive but the security of your data is paramount.
Apologies for the inconvenience caused in the meantime.
We’ll find your subscription and send you a link to login to manage your preferences.
We’ve found your existing subscription and have emailed you a secure link to manage your preferences.
We’ll use your email to save your preferences so you can update them later.
Subscribe to other services using the bell icon on the subscribe button on the status page.
You’ll no long receive any status updates from Netcalibre Service Status, are you sure?
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We’ll no longer send you any status updates about Netcalibre Service Status.