CVE-2018-13374

Name: CVE-2018-13374
Creator: NVD / NIST
Published: 2019-01-22T14:29:00.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10Actively ExploitedEPSS 38.09%

Last modified Jun 17, 2026

CVE-2018-13374 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 38.09% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

38.09%

98.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 29, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fortinet	Fortiadc	>= 5.4.0, < 5.4.5
Fortinet	Fortiadc	>= 6.0.0, < 6.0.2
Fortinet	Fortiadc	6.1.0
Fortinet	Fortios	< 6.0.3

References

https://fortiguard.com/advisory/FG-IR-18-157Vendor Advisory
https://fortiguard.com/advisory/FG-IR-18-157Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13374US Government Resource

Timeline

Published: Jan 22, 2019
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-13374?

How severe is CVE-2018-13374?

CVE-2018-13374 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 38.09% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2018-13374?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-13374?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST