CRITICAL SeverityCVSS 3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2026-20184
Last updated Apr 16, 2026 · Published Apr 15, 2026
Description
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. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by connecting to a service endpoint and supplying a crafted token. A successful exploit could have allowed the attacker to gain unauthorized access to legitimate Cisco Webex services.
Affected products
1 listed- Cisco:Cisco Webex Meetings
Mappings
CWE
CWE-295
CAPEC
None listed.
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