Cisco requires Expressway-E and Expressway-C to be upgraded to the same version (X15.4 or X15.5) for the Client Auth EKU fix.

Checked 2026-10-01

Vendor
Cisco
Product
Cisco Expressway
Subsystem
certificates
Deployment
on-premises
Region
not restricted
Release range
X15.4 and X15.5
Checked
2026-10-01

Sources

Cite this note

APA

WarmTransfer. (2026, October 1). Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-eku-fix-same-version. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-eku-fix-same-version

BibTeX

@misc{warmtransfer-claim-expressway-mra-troubleshooting-eku-fix-same-version,
  title  = {Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-eku-fix-same-version},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-eku-fix-same-version},
  note   = {Source note expressway-mra-troubleshooting-eku-fix-same-version, checked 2026-10-01}
}

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