Ciena · Navigator Network Control Suite · CVE-2026-5267
**Name of the Vulnerable Software and Affected Versions**
Ciena Navigator Network Control Suite (NCS) (affected versions not specified)
**Description**
An information exposure issue exists in an event-streaming API that fails to properly enforce authentication. An unauthenticated attacker with network access to the service could access the event stream to obtain sensitive information.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.