Field Notice FN74345 - Cisco On-Premises Calling Products: Impact on Secure Communication Due to Upcoming Changes to TLS certificates Issued by Public Certificate Authorities with Client Authentication EKU, Starting May 2026

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/support/docs/field-notices/743/fn74345.html

Published

2026-03-31

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

Cisco documentation; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

Cite this source record

APA

WarmTransfer. (2026, March 31). Field Notice FN74345 - Cisco On-Premises Calling Products: Impact on Secure Communication Due to Upcoming Changes to TLS certificates Issued by Public Certificate Authorities with Client Authentication EKU, Starting May 2026. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-fn74345-public-ca-client-auth-eku

BibTeX

@misc{warmtransfer-cisco-fn74345-public-ca-client-auth-eku,
  title  = {Field Notice FN74345 - Cisco On-Premises Calling Products: Impact on Secure Communication Due to Upcoming Changes to TLS certificates Issued by Public Certificate Authorities with Client Authentication EKU, Starting May 2026},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-fn74345-public-ca-client-auth-eku},
  note   = {Cisco Systems, accessed 2026-10-02}
}