Improper Certificate Validation in Cisco Webex Services - CVE-2026-20184

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Main Vulnerability Database Vulnerabilities #VU126385

Improper Certificate Validation in Cisco Webex Services - CVE-2026-20184

Published: April 17, 2026


Vulnerability identifier: #VU126385
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-20184
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Webex Services

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper certificate validation in the integration of single sign-on (SSO) with Control Hub. A remote attacker can gain unauthorized access to legitimate Cisco Webex services.


How to mitigate CVE-2026-20184

Install updates from vendor's website.

Sources