Source note · Setting up certificates on Cisco Expressway

From X15.4, an Expressway-E accepts upload of a certificate with only the serverAuth EKU and still supports MRA registrations.

Checked 2026-09-30

Vendor: Cisco
Product: Cisco Expressway
Subsystem: eku
Deployment: on-premises
Region: not restricted
Release range: X15.4 and later
Checked: 2026-09-30

Sources

Field Notice: FN74362 - Cisco Expressway: Impact on Secure Communication due to Upcoming Changes to TLS Certificates Issued by Public Certificate Authorities with Client Authentication EKU, Starting May 2026 - Workaround Provided — Cisco Systems · tier 2 current vendor documentation · Workaround/Solution > X15.4

Cite this note

APA

WarmTransfer. (2026, September 30). Setting up certificates on Cisco Expressway: source note expressway-certificate-setup-eku-x154-e-server-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-certificate-setup-eku-x154-e-server-only

BibTeX

@misc{warmtransfer-claim-expressway-certificate-setup-eku-x154-e-server-only,
  title  = {Setting up certificates on Cisco Expressway: source note expressway-certificate-setup-eku-x154-e-server-only},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/expressway-certificate-setup-eku-x154-e-server-only},
  note   = {Source note expressway-certificate-setup-eku-x154-e-server-only, checked 2026-09-30}
}

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