CVE-2005-0186: Cisco IOS

Medium severity, CVSS 5.0. EPSS: 2.6% chance of exploitation in the next 30 days.

Cisco IOS 12.1YD, 12.2T, 12.3 and 12.3T, when configured for the IOS Telephony Service (ITS), CallManager Express (CME) or Survivable Remote Site Telephony (SRST), allows remote attackers to cause a denial of service (device reboot) via a malformed packet to the SCCP port.

Affected products

• Cisco IOS: version 12.1yd only; version 12.2t only; version 12.3 only; version 12.3t only

Published 2005-01-19. Last modified 2026-06-16.