CVE:CVE-1999-1421
CNNVD:CNNVD-199807-022
Nbase交换机 NH208和NH215运行一个TFTP服务器，远程攻击者通过推测含默认名称的目标文件名，发送软件升级来修改交换机或者导致服务拒绝（崩溃）。
solution:Upgrade n-base nh208 to a higher version than *; Upgrade n-base nh215 to a higher version than *