You're reading the brief from Sun, Oct 25.
A researcher disclosed unpatched Tailscale SSH flaws that could let an attacker turn control of one device into root access on other reachable servers, under specific configurations.
Cybersecurity1 item
Vulnerabilities
Unpatched Tailscale SSH flaws could enable root access across reachable servers
A researcher reported that an attacker controlling one Tailscale device could gain root access to other servers. The attack requires Tailscale SSH port forwarding to be enabled and network access rules permitting the compromised device to connect to the target.
Why it matters: For affected deployments, one compromised device could expose additional servers despite network access controls; the reported attack depends on configuration and existing access.