CVE-2026-5267 — Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Ciena / Navigator NCS	affected 7.2 and any older release; affected 7.2-P01 through 7.2-P07; affected 8.0; affected 8.0-P01 through 8.0-P06A; affected 8.1; affected 8.1-P01 through 8.1-P06; affected 8.2; affected 8.2-P01 through 8.2-P06; affected 9.0; affected 9.0-P01 through 9.0-P05A; affected 9.1; affected 9.1-P01 through 9.1-P05; affected 9.2; affected 9.2-P01 through 9.2-P02; affected 10.0; affected 10.0-P01 through 10.0-P01B

Vendor / product

Versions

Ciena / Navigator NCS

affected 7.2 and any older release; affected 7.2-P01 through 7.2-P07; affected 8.0; affected 8.0-P01 through 8.0-P06A; affected 8.1; affected 8.1-P01 through 8.1-P06; affected 8.2; affected 8.2-P01 through 8.2-P06; affected 9.0; affected 9.0-P01 through 9.0-P05A; affected 9.1; affected 9.1-P01 through 9.1-P05; affected 9.2; affected 9.2-P01 through 9.2-P02; affected 10.0; affected 10.0-P01 through 10.0-P01B

CWE

CWE-306

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.