PT-2026-55943 · Ciena · 6500 S-Series+3

Published

2026-07-06

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Updated

2026-07-06

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CVE-2026-5268

None

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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.

Authentication Bypass Using an Alternate Path or Channel

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Weakness Enumeration

Related Identifiers

CVE-2026-5268

Affected Products

6500 S-Series
Tn-G6500 Series
Cpl
Pts