From csoonline.com
![intro security vulnerability](https://images.idgesg.net/images/article/2018/09/intro_security-vulnerability-100771038-large.jpg)
Cisco Systems and Palo Alto Networks have fixed similar high-risk authentication bypass vulnerabilities in their network security devices that were caused by an oversight in the implementation of the Kerberos protocol. Man-in-the-middle (MitM) attackers could exploit these weaknesses to get administrative control over the appliances.