CVE-2026-22153Network attack vector

Unauthenticated access to LDAP-protected network resources

Published Feb 10, 2026 · Updated Feb 10, 2026

Authentication bypass in Fortinet FortiOS 7.6.0 through 7.6.4 allows remote attackers to access LDAP-protected network resources. Agentless VPN or FSSO policy accepts authentication without valid LDAP credentials when the remote LDAP server has a specific configuration; Fortinet has not disclosed the exact validation error. Exploitation requires that LDAP configuration, and the reported consequence is unauthorized access to protected resources rather than a disclosed code-execution mechanism.

CVSS severity8.1
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Fortinet FortiOS 7.6.0 through 7.6.4 allows remote attackers to access LDAP-protected network resources. Agentless VPN or FSSO policy accepts authentication without valid LDAP credentials when the remote LDAP server has a specific configuration; Fortinet has not disclosed the exact validation error. Exploitation requires that LDAP configuration, and the reported consequence is unauthorized access to protected resources rather than a disclosed code-execution mechanism.

The record

CVE
CVE-2026-22153
Published
Feb 10, 2026
Updated
Feb 10, 2026
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-305, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.6.0 <=7.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiOSversion=7.6.0 <=7.6.4

Published CVSS scores

8.1Fortinet, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-305Authentication Bypass by Primary Weakness
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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