On relevant news, Cisco has also patched 18 vulnerabilities on their AsyncOS Software and Cisco Email Security Appliance products. The weaknesses on the former product permitted remote and unauthenticated attackers to formulate denial of service conditions (DoS) on the affected systems. On the Email suite, the most critical vulnerabilities allowed the sending of S/MIME-signed malicious emails caused by a failure in the filtering system due to an improper URL whitelisting functionality. The above affects multiple Cisco products from version 11.1 and older, so patching them results in a widespread fixing. Versions 12.x were found not to contain the aforementioned vulnerabilities, so there is no reason to upgrade if you're running the latest AsyncOS software. Cisco discovered the vulnerabilities themselves, and their "Product Security Incident Response Team" report no known malicious use so far.