CVE-2026-5268

CRITICAL9.1

Published 2026-07-06 · Updated 2026-07-06 · Source 7bd90cf1-1651-495e-9ae8-9415fb3c9feb

Description

An authentication bypass vulnerability exists in the default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass security controls and gain unauthorized access to the underlying filesystem. Successful exploitation could allow an attacker to read or modify system files.

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

CWE-288

References

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

View on NVD

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