CVE-2021-34712: Cisco Catalyst SD-WAN Manager

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct cypher query language injection attacks on an affected system. This vulnerability is due to insufficient input validation by the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to the interface of an affected system. A successful exploit could allow the attacker to obtain sensitive information.

Affected products

• Cisco Catalyst SD-WAN Manager: from 20.4, up to and including 20.4.2; version 20.5 only; version 20.6 only
• Cisco SD-WAN Vmanage: from 20.3, before 20.3.4 (fixed in 20.3.4)

Published 2021-09-23. Last modified 2026-06-17.