Medium severity · published Jun 17, 2026
CVE-2026-20246
Cisco Umbrella Virtual Appliance Privilege Escalation Vulnerability
6.0
CVSS
0.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cisco Umbrella Insights Virtual Appliance · Cisco
2.6.0; 2.5.6; 2.5; 2.4.12; 2.7; 2.6.2; +34 more · source: vendor
UV
Umbrella Virtual Appliance · Cisco
before 3.8.5 · source: NVD
Affected product
CU
Cisco Umbrella Insights Virtual Appliance
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20246
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20246
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AU
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