Cisco Webex Services Vulnerability Lets Remote Attackers Impersonate Any User
ID: 73f9ca53-48cc-5f35-aec7-ff3a7a8befaa
STIX ID: report--73f9ca53-48cc-5f35-aec7-ff3a7a8befaa
Feed Name: Cyber Press
Threat Score
Cisco has disclosed CVE-2026-20184, a critical (9.8/10) improper certificate validation flaw in Webex SSO that can let unauthenticated attackers impersonate registered users and access meetings, files, and private channels; Cisco reports no detected active exploitation, has patched cloud services, and advises administrators to generate and upload new SAML certificates and verify updated SSO settings immediately.
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