CVE-2018-13374

MEDIUM
4.3
CVSS Score
Published: January 22, 2019 at 02:00 PM UTC
Updated: October 1, 2026 at 07:17 PM UTC
2 products affected across 1 vendorFortiOSFortiADC

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Severity
MEDIUM4.3
Exploitation
CISA KEV
Exploit prediction
EPSS 38%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score38.1%

EPSS (Exploit Prediction Scoring System) estimates a 38.1% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Known
Added to KEV
Sep 8, 2022
Remediation Due
Sep 29, 2022
1491 days overdue

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 5.4.45.4.0 ≤ v < 5.4.56.0.0 ≤ v < 6.0.26.1.0
Affected range stops below 5.4.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.0.2, so it looks safe — our inference, not a vendor statement
v ≤ 5.4.4v < 6.0.3
Affected range stops below 6.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_CONFIRMVendor Advisory
https://fortiguard.com/advisory/FG-IR-18-157
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13374

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMfortinet
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-732

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