Cisco IOS 12.1 through 12.4 when Cisco Unified Communications Manager Express (CME) or Cisco Unified Survivable Remote Site Telephony (SRST) is enabled allows remote attackers to cause a denial of service (device reload) via a malformed Skinny Client Control Protocol (SCCP) message aka Bug ID CSCsz48614 the \SCCP Packet Processing Denial of Service Vulnerability.\