CVE-2007-1826: Cisco Unified Callmanager

High severity, CVSS 7.8. EPSS: 2% chance of exploitation in the next 30 days.

Unspecified vulnerability in the IPSec Manager Service for Cisco Unified CallManager (CUCM) 5.0 before 5.0(4a)SU1 and Cisco Unified Presence Server (CUPS) 1.0 before 1.0(3) allows remote attackers to cause a denial of service (loss of cluster services) via a "specific UDP packet" to UDP port 8500, aka bug ID CSCsg60949.

Affected products

• Cisco Unified Callmanager: version 5.0 only; version 5.0(1) only; version 5.0(2) only; version 5.0(3) only; version 5.0(3a) only; version 5.0(4) only
• Cisco Unified Presence Server: version 1.0 only; version 1.0(1) only; version 1.0(2) only

Published 2007-04-02. Last modified 2026-06-16.