CVE-2011-0389: Cisco Telepresence Multipoint Switch

High severity, CVSS 7.8. EPSS: 2.6% chance of exploitation in the next 30 days.

Cisco TelePresence Multipoint Switch (CTMS) devices with software 1.0.x, 1.1.x, 1.5.x, and 1.6.x allow remote attackers to cause a denial of service (process crash) via a crafted Real-Time Transport Control Protocol (RTCP) UDP packet, aka Bug ID CSCth60993.

Affected products

• Cisco Telepresence Multipoint Switch
• Cisco Telepresence Multipoint Switch Software: version 1.0.4.0 only; version 1.1.0 only; version 1.1.1 only; version 1.1.2 only; version 1.5.0 only; version 1.5.1 only; …

Published 2011-02-25. Last modified 2026-06-16.