CVE-2026-5268
Critical · 9.1CVSS
9.1
EPSS
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Published
Jul 6, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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Related vulnerabilities
- CVE-2026-114732 Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper… CWE-288
- CVE-2026-96387 Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Stop… CWE-288
- CVE-2026-96385 Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal REST &… CWE-288
- CVE-2026-84923 Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Email… CWE-288
- CVE-2026-114635 Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in… CWE-288
- CVE-2026-81906 Concrete CMS OAuth callback login path prior to version 9.5.3 did not check whether an… CWE-288
- CVE-2026-81787 Unauthenticated Broken Authentication in IMPress for IDX Broker <= 3.3.0 versions. CWE-288
- CVE-2026-81783 Subscriber Broken Authentication in MailMunch – Grow your Email List <= 3.2.5 versions. CWE-288