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

Yes. CVE-2018-13374 is on the CISA Known Exploited Vulnerabilities list, added 2022-09-08, and has known ransomware campaign use.

What is the CVSS severity of CVE-2018-13374?

CVE-2018-13374 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2018-13374?

CVE-2018-13374 has an EPSS score of 38.09% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-13374?

Upgrade fortiadc to 6.0.2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2018-13374

MEDIUMCISA KEVEPSS 98th pctl

4.3

CVSS v3

NVD

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.

CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

fortiadcNVD

Affected:>= 6.0.0, < 6.0.2Fixed in:6.0.2CVE-2018-13374derived from NVD

fortiosNVD

Affected:< 6.0.3Fixed in:6.0.3CVE-2018-13374derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

38.09%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Fortinet FortiOS and FortiADC Improper Access Control Vulnerability

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.

Apply updates per vendor instructions.

Remediation due: 2022-09-29

Associated with ransomware campaigns

References

Vendor Advisory1

fortiguard.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-3923	Critical	9.8	89%	-	Fix
CVE-2018-15379	Critical	9.8	86%	-	-
CVE-2018-1000207	High	7.2	64%	-	-
CVE-2023-32986	High	8.8	61%	-	-
CVE-2021-44521	Critical	9.1	55%	-	Fix
CVE-2022-22960	High	7.8	37%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.