A vulnerability has been discovered in WatchGuard Fireware OS, which could allow for arbitrary code execution. Fireware OS is the software that runs on WatchGuard Firebox firewalls. Fireware includes a Web UI that includes a way to manage and monitor each Firebox in your network. Successful exploitation of this vulnerability may allow a remote unauthenticated attacker to execute arbitrary code. Depending on the privileges associated with the affected user, an attacker could then install programs; view, change, or delete data. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Read more... Cyber Security Advisories - MS-ISAC