Cisco ONS 15454 System Software 10.30 and 10.301 allows remote attackers to cause a denial of service (tNetTask CPU consumption or card reset) via a flood of (1) IP or (2) Ethernet traffic, aka Bug ID CSCus57263.
Cisco ONS 15454 controller cards with software 10.0 and earlier allow remote attackers to cause a denial of service (card reload) via a crafted HTTP URI, aka Bug ID CSCun06870.