We're investigating security vulnerabilities affecting Tailscale SSH and wanted to share an update on what we've found, what we're doing about it, and what customers should know.

Our engineering and security teams have been investigating the reported issues with help from external security specialists. This builds on work already underway, which we've accelerated to address the findings and prepare fixes.

Most of the Tailscale SSH issues we've identified concern privilege escalation. In some circumstances, someone already authorized to connect over Tailscale SSH may be able to perform actions beyond the permissions of their configured local user, including potentially gaining elevated privileges.