Cisco patches two high-severity bugs that could be exploited by remote attackers. Impacted are Cisco s TelePresence Video Communication Server and ASA 5500-X Series Firewalls. The vulnerability with the widest likely impact is CVE-2019-1721, which is a flaw in the phone-book feature of Cisco Expressway Series. A successful exploit could allow the attacker to disrupt traffic through the device while it reboots. A third DoS vulnerability for instance was patched on Friday.
Source: https://threatpost.com/cisco_high-severity_bug/144410/