If you're running Cisco's supposedly Smart Licensing Utility, there are two flaws you should address right now.
Cisco Smart Licensing Overview SL SLP SLE CSLU CSSM
"Several vulnerabilities in Cisco Smart Licensing Utility could allow an unauthenticated remote attacker to collect sensitive information or administer Cisco Smart Licensing Utility services on a system while the software is running," the networking giant warned of two critical issues.
"Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities."
The two independent flaws could allow a remote attacker to log himself in with administrator privileges and subvert the entire system. It is bad if untrusted people or rogue users can reach the license service. If you have other defenses in front of the Cisco software, it will reduce the risk.