HOMEVULNERABILITIESCVE-2026-20246
MEDIUM

CVE-2026-20246

CWE-269Published: June 17, 2026· Updated: Jun 22, 2026

6.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-20246 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 6.0.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

Cisco1 product
umbrella virtual appliance
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

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

All References (1)

→
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AUVendor Advisory

Quick Facts

CVE IDCVE-2026-20246
CVSS Score6.0 / 10
SeverityMEDIUM
WeaknessCWE-269
CISA KEVNo
Affected1 vendor
PublishedJun 17, 2026

Related CVEs (CWE-269)

CVE-2026-31852
10.0
CVE-2026-30269
9.9
CVE-2026-47744
9.9
CVE-2026-33821
9.9
CVE-2026-50564
9.9
CVE-2026-50545
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-20246 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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