CVE-2017-6648: Cisco Telepresence CE Software

High severity, CVSS 7.5. EPSS: 3.6% chance of exploitation in the next 30 days.

A vulnerability in the Session Initiation Protocol (SIP) of the Cisco TelePresence Codec (TC) and Collaboration Endpoint (CE) Software could allow an unauthenticated, remote attacker to cause a TelePresence endpoint to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of flow-control mechanisms within the software. An attacker could exploit this vulnerability by sending a flood of SIP INVITE packets to the affected device. An exploit could allow the attacker to impact the availability of services and data of the device, including a complete DoS condition. This vulnerability affects the following Cisco TC and CE platforms when running software versions prior to TC 7.3.8 and CE 8.3.0. Cisco Bug IDs: CSCux94002.

Affected products

• Cisco Telepresence CE Software: version 8.2.2 only
• Cisco Telepresence Tc Software: version 3.1.5 only; version 3.1_base only; version 4.1.0 only; version 4.1.1 only; version 4.1.2 only; version 4.1_base only; …

Published 2017-06-08. Last modified 2026-06-17.