Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-20184

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-295 Validación incorrecta de certificados
Fecha de publicación:
15/04/2026
Última modificación:
17/04/2026

Descripción

*** Pendiente de traducción *** 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.<br /> <br /> 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.