CVE-2008-1745: Cisco Unified Communications Manager

High severity, CVSS 7.8. EPSS: 1.9% chance of exploitation in the next 30 days.

Cisco Unified Communications Manager (CUCM) 5.x before 5.1(2) and 6.x before 6.1(1) allows remote attackers to cause a denial of service (service interruption) via a SIP JOIN message with a malformed header, aka Bug ID CSCsi48115.

Affected products

• Cisco Unified Communications Manager: version 4.1 only; version 4.2 only; version 4.3 only; version 5.1 only; version 6.0 only; version 6.1 only

Published 2008-05-16. Last modified 2026-06-16.