HP Procurve Switch 4000M running firmware C.08.22 and C.09.09 allows remote attackers to cause a denial of service via a port scan of the management IP address, which disables the telnet service.

The HTTP administration interface for HP Procurve 4000M Switch firmware before C.09.16, with stacking features and remote administration enabled, does not authenticate requests to reset the device, which allows remote attackers to cause a denial of service via a direct request to the device_reset CGI program.

HP ProCurve Switch 4000M C.07.23 allows remote attackers to cause a denial of service (crash) via an SNMP write request containing 85 characters, possibly triggering a buffer overflow.