[ CVE-2026-5267 · Published 25 Sep 2026 ]
Vulnerability in Ciena Navigator NCS
CVSS 7.5
EPSS <1%No fix listed yet
[ Description ]Official description
Ciena Navigator Network Control Suite (NCS) contains an information exposure vulnerability in an event-streaming API that does not properly enforce authentication. An unauthenticated attacker with network access to the affected service could access the event stream and potentially obtain sensitive information.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.