Which products and versions are affected by CVE-2018-13374?

Affected: Fortiadc (Fortinet) versions 6.1.0; Fortios (Fortinet); Fortinet FortiOS, fortiADC versions >= 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. The full list is in the CVE brief.

Is CVE-2018-13374 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 16, 2021 and is known to be used in ransomware campaigns.

Is CVE-2018-13374 in the CISA KEV catalog?

Yes. It was added on Sep 8, 2022 with a federal remediation due date of Sep 29, 2022.

Is there a public exploit for CVE-2018-13374?

Public exploit code is available.

Is there a fix for CVE-2018-13374?

Fixed versions are available, including Fortiadc 5.4.5, Fortiadc 6.0.2, Fortios 6.0.3.

How urgently should CVE-2018-13374 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2018-13374

MediumExploitedPublic exploit

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…

Published Jan 22, 2019 · Updated Oct 1, 2026

Key Facts

Patch immediately

CVE-2018-13374 is a medium-severity vulnerability (CVSS 4.3 v3.1) affecting Fortiadc (Fortinet), Fortios (Fortinet), Fortinet FortiOS, fortiADC.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 16, 2021 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 38% probability of exploitation in the next 30 days.
Fixed versions are available, including Fortiadc 5.4.5, Fortiadc 6.0.2, Fortios 6.0.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

4.3

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

EPSS (30-day exploit likelihood)

38%

Higher than 98.5% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2018-13374 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Sep 8, 2022	Sep 29, 2022	Known
Industry KEV feed	Feb 16, 2021	Sep 29, 2022	Known
CIRCL KEV	Sep 8, 2022	Sep 29, 2022	Known
ENISA EUVD	Sep 8, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
FortiadcFortinet	6.1.0	5.4.5
FortiosFortinet	See advisory	6.0.3
Fortinet FortiOS, fortiADC	>= 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	n/a

Patched Releases

Fortiadc

5.4.5, 6.0.2

Fortios

6.0.3

Timeline

Publicly disclosed
Jan 22, 2019
Added to Industry KEV feed
Feb 16, 2021
Added to CISA KEV
Sep 8, 2022
Added to CIRCL KEV
Sep 8, 2022
Added to ENISA EUVD
Sep 8, 2022
Last updated
Oct 1, 2026

Weakness Type

CWE-732 Incorrect Permission Assignment for Critical Resource

References

advisoryhttps://fortiguard.com/advisory/FG-IR-18-157
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report

6 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: Fortiadc (Fortinet) versions 6.1.0; Fortios (Fortinet); Fortinet FortiOS, fortiADC versions >= 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. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 16, 2021 and is known to be used in ransomware campaigns.
Yes. It was added on Sep 8, 2022 with a federal remediation due date of Sep 29, 2022.
Public exploit code is available.
Fixed versions are available, including Fortiadc 5.4.5, Fortiadc 6.0.2, Fortios 6.0.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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