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Fortinet PSIRT AdvisoriesFG-IR-25-1052

LDAP authentication bypass in Agentless VPN and FSSO

HighVendor CVSS 7.5 / 10 1 CVE Published Feb 10, 2026 at 8:00 AM UTC

Summary

CVSSv3 Score: 7.5 An Authentication Bypass by Primary Weakness vulnerability [CWE-305] in FortiOS fnbamd may allow an unauthenticated attacker to bypass LDAP authentication of Agentless VPN or FSSO policy, under specific LDAP server configuration. Revised on 2026-07-04 00:00:00

Products covered

  • FortiOS

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • Added CVEs: CVE-2026-22153.

Updates

  1. Published by Fortinet

    The publication date reported by the vendor.

  2. Updated by Fortinet

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.