CVE-2002-1071: Undefined Security Weakness

ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services crash via a TCP packet with both the SYN and ACK flags set...

ZYXEL Prestige 642R Router - Malformed Packet Denial of Service

ZYXEL Prestige 642R Router - Malformed Packet Denial of Service source: https://www.securityfocus.com/bid/5034/info ZyXEL 642R routers have difficulties handling certain types of malformed packets. In particular, it is possible to deny services by sending a vulnerable router a SYN-ACK packet. To ...