ConnectWise, Kaseya Perspectives
The issue, which involved old ConnectWise code and apparently surfaced late last week, has triggered close work between ConnectWise and Kaseya in recent days. It sounds like Kaseya reached out to ConnectWise about the issue last week, and the two companies have been cooperating to assist MSPs and mitigate potential issues since that time.
"We worked with Kaseya when the vulnerability was originally identified and we’ve been working with Kaseya to correct the issue for those MSPs impacted recently. By working closely with the Kaseya team, we determined that MSPs currently being impacted by this vulnerability may have installed the update incorrectly. We are pushing out an update today to ensure the plugin is configured correctly to prevent the previously known vulnerability.
Security is important to us and we always recommend that partners keep systems updated and use the ConnectWise team as a resource. When we provide updates to ConnectWise products, integrations or plugins, we send out emails and in-app messaging to alert MSPs of the update. Partners can learn more about the update by contacting ConnectWise support or by visiting the ConnectWise Marketplace here."

"We reviewed who in our base was running the connector installed from Connectwise, and checked with our script to see if they were vulnerable (i.e. running old version).
We identified that 126 customers were potentially at risk for impact. We posted a notification/support article to our support help desk and immediately started reaching out via phone/email to those identified who were at risk of impact with resolution."