CVE-2026-5267 — HIGH (7.5) — White Hats Nepal

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-306

References

https://www.ciena.com/product-security

FAQ

What is CVE-2026-5267?

CVE-2026-5267 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 net...

How severe is CVE-2026-5267?

CVE-2026-5267 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-5267?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.