Riskcovery

CVE-2026-5267

Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS

State
Published
Severity
7.5 High
Published
Sep 25, 2026
Updated
Sep 25, 2026
Reserved
Mar 31, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCISA-ADP

Weaknesses

  • CWE-306 Missing authentication for critical function

Affected Products

ProductVersions
Navigator NCSCiena
  • 7.2 and any older releaseAffected
  • 7.2-P01 through 7.2-P07Affected
  • 8.0Affected
  • 8.0-P01 through 8.0-P06AAffected
  • 8.1Affected
  • 8.1-P01 through 8.1-P06Affected
  • 8.2Affected
  • 8.2-P01 through 8.2-P06Affected
  • 9.0Affected
  • 9.0-P01 through 9.0-P05AAffected
  • 9.1Affected
  • 9.1-P01 through 9.1-P05Affected
  • 9.2Affected
  • 9.2-P01 through 9.2-P02Affected
  • 10.0Affected
  • 10.0-P01 through 10.0-P01BAffected

References

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