CVE-2026-5268

critical · 9.1

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.

9.1

CVSS

0.7%

EPSS (exploit prob.)

50th

EPSS percentile

2026-07-06

Published

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

Weaknesses

CWE-288

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-5268