CVE-2018-13374
Fortinet FortiOS and FortiADC Improper Access Control Vulnerability
- Medium 4.3
- Exploited: added to CISA KEV 8 Sep 2022
- Used in ransomware campaigns
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.
Key facts
- Published
- 22 Jan 2019
- Last changed
- 1 Oct 2026
- Assigned by
- fortinet
- KEV added
- 8 Sep 2022
- KEV fix due
- 29 Sep 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 38.088% likely to be exploited in the next 30 days, higher than 98.58% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 4.3CVSS 3.1, Mediumfrom the CNA (fortinet)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortinet FortiOS, fortiADC |
|
Timeline
- 22 Jan 2019 Published
- 8 Sep 2022 Added to the CISA KEV catalogue