CVE-2022-20812: Cisco Expressway

Medium severity, CVSS 6.5. EPSS: 1.9% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to overwrite arbitrary files or conduct null byte poisoning attacks on an affected device. Note: Cisco Expressway Series refers to the Expressway Control (Expressway-C) device and the Expressway Edge (Expressway-E) device. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

• Cisco Expressway: before x14.0.7 (fixed in x14.0.7)
• Cisco Telepresence Video Communication Server: before x14.0.7 (fixed in x14.0.7)

Published 2022-07-06. Last modified 2026-06-17.