CVE-2026-5267
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.
- Published Sep 25, 2026
- CVSS 7.5 high
- 0.4% chance of exploitation in the next 30 days (EPSS)