CVE-2015-4316: Cisco Telepresence Video Communication Server Software

Medium severity, CVSS 5.5. EPSS: 1.9% chance of exploitation in the next 30 days.

The Mobile and Remote Access (MRA) endpoint-validation feature in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 improperly validates the phone line used for registration, which allows remote authenticated users to conduct impersonation attacks via a crafted registration, aka Bug ID CSCuv40396.

Affected products

• Cisco Telepresence Video Communication Server Software: version x8.5.2 only

Published 2015-08-20. Last modified 2026-06-17.