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.
Published: 2026-06-17
Score: 6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability stems from insufficient validation of user-supplied commands in the vmadmin command‑line interface of Cisco Umbrella Virtual Appliance. An authenticated attacker who can run commands as vmadmin can exploit the flaw to elevate privileges to root, thereby gaining full control over the device. This is a local privilege escalation weakness (CWE‑269).

Affected Systems

Cisco Umbrella Insights Virtual Appliance is the affected product. No specific affected versions are listed in the advisory.

Risk and Exploitability

The CVSS assessment gives a moderate severity of 6.0, while the EPSS score of less than 1% indicates a low probability of exploitation at present. The vulnerability is not listed in CISA’s KEV catalog. Exploitation requires local access and valid vmadmin credentials; it cannot be triggered remotely. Given the lack of publicly known exploits, the immediate threat remains low, but the potential impact of reaching root warrants timely remediation.

Generated by OpenCVE AI on June 18, 2026 at 18:16 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the vendor‑supplied firmware update that addresses the CLI validation flaw.
  • Revoke or disable any unused vmadmin accounts and restrict the remaining account to only necessary functions.
  • Enable logging of vmadmin command execution and regularly review logs for abnormal activity.

Generated by OpenCVE AI on June 18, 2026 at 18:16 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 19 Jun 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco umbrella Insights Virtual Appliance
Vendors & Products Cisco
Cisco umbrella Insights Virtual Appliance

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
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.
Title Cisco Umbrella Virtual Appliance Privilege Escalation Vulnerability
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Cisco Umbrella Insights Virtual Appliance
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-06-17T17:17:13.797Z

Reserved: 2025-10-08T11:59:15.400Z

Link: CVE-2026-20246

cve-icon Vulnrichment

Updated: 2026-06-17T17:17:08.256Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-19T09:30:16Z

Weaknesses
  • CWE-269

    Improper Privilege Management