Source note · Expressway and Mobile and Remote Access
FN74362 says public CAs stop issuing certificates that combine Server and Client Authentication EKUs from May 2026. Expressway mTLS connections expect both EKUs.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- certificates
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X14 and X15
- Checked
- 2026-09-24
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 · FN74362, Background and Problem Description sections
Cite this note
APA
WarmTransfer. (2026, September 24). Expressway and Mobile and Remote Access: source note cucm-expressway-mra-eku-public-ca-may-2026. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-expressway-mra-eku-public-ca-may-2026
BibTeX
@misc{warmtransfer-claim-cucm-expressway-mra-eku-public-ca-may-2026,
title = {Expressway and Mobile and Remote Access: source note cucm-expressway-mra-eku-public-ca-may-2026},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-expressway-mra-eku-public-ca-may-2026},
note = {Source note cucm-expressway-mra-eku-public-ca-may-2026, checked 2026-09-24}
}