Temporary Access Restrictions for SFC-CNS Services (October 2026)

To all SFC-CNS users

As a temporary measure in response to the PHP vulnerability announced today, access to the following SFC-CNS services has been restricted to the campus network (133.27.0.0/16).

・Shared Workspace (webpub.sfc.keio.ac.jp)
・Personal Websites (web.sfc.keio.ac.jp)
・WebMail Service (webmail.sfc.keio.ac.jp)
・CNS Online Storage Service (one.sfc.keio.ac.jp)
・Certificate Document Upload Server (itcdrive.sfc.keio.ac.jp)

These services are unavailable from networks outside the campus network.
We apologize for the inconvenience and appreciate your understanding and cooperation.

After an update addressing the vulnerability is released, we will consider restoring access from outside the campus network.
We will provide a further update once preparations for restoring the services are complete.

Information about the vulnerability

Users connecting from off campus can access the campus network through the CNS-VPN service.
About the CNS-VPN Service

For inquiries about this matter, please contact us at:
cns-request@sfc.keio.ac.jp