CVE-2018-13374: in the CISA KEV catalogue
Fortinet FortiOS and FortiADC Improper Access Control Vulnerability. CISA added CVE-2018-13374 to the Known Exploited Vulnerabilities catalogue on 2022-09-08 with a default due date of 2022-09-29. Known ransomware campaign use: Known. Forensic triage flag: No.
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. (CISA description)
- Vendor / product
- Fortinet FortiOS and FortiADC
- CWE
- CWE-732
- CISA required action
- Apply updates per vendor instructions.
- EPSS
- 38%, percentile 98 (scored 2026-11-03)
EPSS puts about 38 in 100 odds (38%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 98% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2018-13374 in the CISA KEV catalogue?
Yes. CISA added CVE-2018-13374 (Fortinet FortiOS and FortiADC Improper Access Control Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2022-09-08. CISA's default due date for it is 2022-09-29.
Is CVE-2018-13374 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2018-13374.
What should I do about CVE-2018-13374?
CISA's required action: Apply updates per vendor instructions.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2018-13374