Cisco Webex Services Certificate Validation Vulnerability

Publisher

Cisco PSIRT

URL

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-cui-cert-8jSZYhWL

Published

2026-04-16

Updated

unknown

Accessed

2026-09-30

HTTP status

200

License

Cisco website terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

• CVE-2026-20184 (CVSS 9.8) was an SSO certificate validation flaw in Webex Services that affected only customers using trust anchors and required them to upload a new IdP SAML certificate to Control Hub. in context

Cite this source record

APA

WarmTransfer. (2026, April 16). Cisco Webex Services Certificate Validation Vulnerability. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-sa-webex-cui-cert-8jswzyhwl

BibTeX

@misc{warmtransfer-cisco-sa-webex-cui-cert-8jswzyhwl,
  title  = {Cisco Webex Services Certificate Validation Vulnerability},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-sa-webex-cui-cert-8jswzyhwl},
  note   = {Cisco PSIRT, accessed 2026-09-30}
}