CVE-2026-20246: Cisco Umbrella Virtual Appliance

Medium severity, CVSS 6.0. EPSS: 0.1% chance of exploitation in the next 30 days.

A vulnerability in the vmadmin CLI of Cisco Umbrella Virtual Appliance could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied commands. An attacker with vmadmin privileges could exploit this vulnerability by using certain commands at the CLI. A successful exploit could allow the attacker to elevate privileges to root.

Affected products

• Cisco Umbrella Virtual Appliance: before 3.8.5 (fixed in 3.8.5)

Published 2026-06-17. Last modified 2026-06-22.