How severe is CVE-2018-13374?

CVE-2018-13374 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-13374 being actively exploited?

Yes. CVE-2018-13374 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-08, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2018-13374?

CVE-2018-13374 primarily affects Fortinet Fortiadc. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-13374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2018-13374 have an EU (EUVD) identifier?

Yes. CVE-2018-13374 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-5318. It is also flagged as exploited in the EUVD (since 2022-09-08).

When was CVE-2018-13374 published?

CVE-2018-13374 was published on 2019-01-22 and last updated on 2026-08-13.

CVE-2018-13374

CVE-2018-13374 is a medium-severity vulnerability in Fortinet Fortiadc with a CVSS 3.x base score of 4.3. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-09-08). The underlying weakness is classified as CWE-732.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 38% (98th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-09-08)
EU (EUVD) id: EUVD-2018-5318
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-09-08)
Weakness: CWE-732
Affected product: Fortinet Fortiadc
Published: 2019-01-22
Last modified: 2026-08-13

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.

Frequently asked questions

What is CVE-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 instead of the configured one.
How severe is CVE-2018-13374?: CVE-2018-13374 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-13374 being actively exploited?: Yes. CVE-2018-13374 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-08, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2018-13374?: CVE-2018-13374 primarily affects Fortinet Fortiadc. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-13374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2018-13374 have an EU (EUVD) identifier?: Yes. CVE-2018-13374 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-5318. It is also flagged as exploited in the EUVD (since 2022-09-08).
When was CVE-2018-13374 published?: CVE-2018-13374 was published on 2019-01-22 and last updated on 2026-08-13.

References

Affected products (3)

cpe:2.3:a:fortinet:fortiadc:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiadc:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

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