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Vulnerabilities

Vulnerability · CVE-2018-13374

Fortinet FortiOS and FortiADC Improper Access Control Vulnerability

Published Jan 22, 2019 · catalog updated Oct 1, 2026 · Fortinet FortiOS and FortiADC

Patch now

CVE-2018-13374 is in the CISA known-exploited catalog, due Sep 29, 2022. Confirm Fortinet FortiOS and FortiADC against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Medium4.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
38.09%
Remediation
Remediation guidance
Affected products
cpe fortinet/fortiadc · cpe fortinet/fortios · vendor Fortinet FortiOS and FortiADC

A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server instead of the configured one.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fortinet/fortiadcversion unspecified
  • cpe fortinet/fortiadc6.1.0
  • cpe fortinet/fortiosversion unspecified
  • vendor Fortinet FortiOS and FortiADCversion unspecified

How to fix CVE-2018-13374

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-13374 is in the CISA known-exploited catalog, due Sep 29, 2022. Confirm Fortinet FortiOS and FortiADC against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 6.1.0. Apply updates per vendor instructions.

What should an analyst verify?

CWE-732: Incorrect Permission Assignment for Critical Resource. EPSS 38.09%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

Fortinet security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 22, 2019 · Catalog

    Detected

    A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server instead of the configured one.

  2. Sep 8, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Sep 29, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Oct 1, 2026 · Catalog

    Updated

    A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server instead of the configured one.

Sources

  • CISA KEVConfirmed exploitationCVE-2018-13374

    Fortinet FortiOS and FortiADC contain an improper access control vulnerability that allows attackers to obtain the LDAP server login credentials configured in FortiGate by pointing a LDAP server connectivity test request to a rogue LDAP server.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-13374

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-13374

    30-day exploitation probability 38.1%

    first.org
  • Exploit DatabasePublic exploit reference46171

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDVulnerability recordCVE-2018-13374

    A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server in

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2018-13374

    Fortinet FortiOS and FortiADC contain an improper access control vulnerability that allows attackers to obtain the LDAP server login credentials configured in FortiGate by pointing a LDAP server connectivity test request to a rogue LDAP server.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.