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Fortinet PSIRT AdvisoriesFG-IR-25-1052

LDAP authentication bypass in Agentless VPN and FSSO

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

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7.5CVSS out of 10High severity
Scope

What the vendor says is affected

  • FortiOS
Timeline

When this advisory changed

  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.

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UI DoS attack

FG-IR-26-162