CVE-2010-0588: Cisco Unified Communications Manager

High severity, CVSS 7.8. EPSS: 1.6% chance of exploitation in the next 30 days.

Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5), 7.x before 7.1(3a)su1, and 8.x before 8.0(1) allows remote attackers to cause a denial of service (process failure) via a malformed SCCP (1) RegAvailableLines or (2) FwdStatReq message with an invalid Line number, aka Bug ID CSCtc47823.

Affected products

• Cisco Unified Communications Manager: version 6.0 only; version 6.0(1) only; version 6.0(1a) only; version 6.1 only; version 6.1(1) only; version 6.1(1a) only; …

Published 2010-03-05. Last modified 2026-06-16.