CVE-2009-2050: Cisco Unified Communications Manager

High severity, CVSS 7.8. EPSS: 3.4% chance of exploitation in the next 30 days.

Cisco Unified Communications Manager (aka CUCM, formerly CallManager) before 6.1(1) allows remote attackers to cause a denial of service (voice-services outage) via a malformed header in a SIP message, aka Bug ID CSCsi46466.

Affected products

• Cisco Unified Communications Manager: before 6.1\(1\) (fixed in 6.1\(1\))

Published 2009-08-27. Last modified 2026-06-16.