Critical9.8Cisco Updated
Cisco Webex Services Certificate Validation Vulnerability
cisco-sa-webex-cui-cert-8jSZYhWL Published Apr 16, 2026Updated by vendor Apr 16, 2026
CVE-2026-20184
Affected products & platforms
CiscoUnified CommunicationsWebex
Summary
A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate validation.
Affected versions
- Scope: This vulnerability affected Cisco Webex Services, which are cloud-based, when they were configured to use trust anchors within the SSO integration with Control Hub.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Temporary workarounds
- There are no workarounds that address this vulnerability.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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