Umbrella, Secure Access and Duo
CVE-2026-20246: Cisco Umbrella Virtual Appliance Privilege Escalation Vulnerability
A vulnerability in the vmadmin CLI of Cisco Umbrella Virtual Appliance could allow an authenticated, local attacker to elevate privileges on an affected device.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 6
EPSS0.10%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Cisco Umbrella Insights Virtual Appliance 2.6 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.6 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.6 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 1.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 1.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 1.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.2 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.2 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.2 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.8 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.0 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.1 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.2 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.2 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.2 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.3 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.4 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 2.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.5 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.6 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.6 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.7 | See the advisory |
| Cisco Umbrella Insights Virtual Appliance 3.8 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Exploitation
The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.