CVE-2018-13374
Medium 4.3 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- Fortinet FortiOS and FortiADC Improper Access Control Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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 (MEDIUM)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 38% (percentile: 99) as of 1 November 2026
- CWE
- CWE-732
Affected products
fortinet: fortiadc; fortinet: fortios
References
- https://fortiguard.com/advisory/FG-IR-18-157 Vendor Advisory
- https://fortiguard.com/advisory/FG-IR-18-157 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018… US Government Resource