CVE-2026-20246
Cisco Umbrella Virtual Appliance Privilege Escalation Vulnerability
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.
INFO
Published Date :
June 17, 2026, 5:16 p.m.
Last Modified :
June 22, 2026, 1:24 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-20246
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply available patches from Cisco.
- Restrict access to the vmadmin CLI.
- Validate user-supplied commands.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-20246.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AU | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-20246 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-20246
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20246 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-20246 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cisco:umbrella_virtual_appliance:*:*:*:*:*:*:*:* versions up to (excluding) 3.8.5 Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AU Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-20246', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-17T17:15:44.900787Z'} -
New CVE Received by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Cisco', 'product': 'Cisco Umbrella Insights Virtual Appliance', 'versions': [{'status': 'affected', 'version': '2.6.0'}, {'status': 'affected', 'version': '2.5.6'}, {'status': 'affected', 'version': '2.5'}, {'status': 'affected', 'version': '2.4.12'}, {'status': 'affected', 'version': '2.7'}, {'status': 'affected', 'version': '2.6.2'}, {'status': 'affected', 'version': '2.5.5'}, {'status': 'affected', 'version': '2.5.4'}, {'status': 'affected', 'version': '2.8'}, {'status': 'affected', 'version': '2.6.1'}, {'status': 'affected', 'version': '2.5.7'}, {'status': 'affected', 'version': '1.5.4'}, {'status': 'affected', 'version': '1.5.5'}, {'status': 'affected', 'version': '1.5.6'}, {'status': 'affected', 'version': '2.0.0'}, {'status': 'affected', 'version': '2.0.2'}, {'status': 'affected', 'version': '2.0.3'}, {'status': 'affected', 'version': '2.1.0'}, {'status': 'affected', 'version': '2.1.2'}, {'status': 'affected', 'version': '2.1.4'}, {'status': 'affected', 'version': '2.1.5'}, {'status': 'affected', 'version': '2.2'}, {'status': 'affected', 'version': '2.2.1'}, {'status': 'affected', 'version': '2.3'}, {'status': 'affected', 'version': '2.3.1'}, {'status': 'affected', 'version': '2.4'}, {'status': 'affected', 'version': '2.4.4'}, {'status': 'affected', 'version': '2.4.6'}, {'status': 'affected', 'version': '2.8.9'}, {'status': 'affected', 'version': '3.0'}, {'status': 'affected', 'version': '3.1'}, {'status': 'affected', 'version': '3.2'}, {'status': 'affected', 'version': '2.8.1'}, {'status': 'affected', 'version': '2.8.2'}, {'status': 'affected', 'version': '2.8.3'}, {'status': 'affected', 'version': '2.8.4'}, {'status': 'affected', 'version': '2.8.5'}, {'status': 'affected', 'version': '3.0.1'}, {'status': 'affected', 'version': '3.0.2'}, {'status': 'affected', 'version': '3.0.4'}, {'status': 'affected', 'version': '3.0.5'}, {'status': 'affected', 'version': '3.1.1'}, {'status': 'affected', 'version': '3.1.2'}, {'status': 'affected', 'version': '3.1.3'}, {'status': 'affected', 'version': '3.1.4'}, {'status': 'affected', 'version': '3.2.1'}, {'status': 'affected', 'version': '3.2.2'}, {'status': 'affected', 'version': '3.2.3'}, {'status': 'affected', 'version': '3.3'}, {'status': 'affected', 'version': '3.3.1'}, {'status': 'affected', 'version': '3.3.2'}, {'status': 'affected', 'version': '3.3.3'}, {'status': 'affected', 'version': '3.3.4'}, {'status': 'affected', 'version': '3.4'}, {'status': 'affected', 'version': '3.4.1'}, {'status': 'affected', 'version': '3.4.2'}, {'status': 'affected', 'version': '3.4.3'}, {'status': 'affected', 'version': '3.4.4'}, {'status': 'affected', 'version': '3.4.5'}, {'status': 'affected', 'version': '3.4.6'}, {'status': 'affected', 'version': '3.5'}, {'status': 'affected', 'version': '2.7.1'}, {'status': 'affected', 'version': '2.7.2'}, {'status': 'affected', 'version': '2.7.6'}, {'status': 'affected', 'version': '2.7.9'}, {'status': 'affected', 'version': '2.7.10'}, {'status': 'affected', 'version': '3.5.1'}, {'status': 'affected', 'version': '3.5.2'}, {'status': 'affected', 'version': '3.6.1'}, {'status': 'affected', 'version': '3.6.2'}, {'status': 'affected', 'version': '3.7'}, {'status': 'affected', 'version': '3.7.1'}, {'status': 'affected', 'version': '3.8.3'}], 'defaultStatus': 'unknown'}] 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. Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N Added CWE CWE-269 Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AU