CVE-2018-13374
Fortinet FortiOS and FortiADC Improper Access Control Vulnerability
What the flaw is
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.
Description as published by CISA. We have not independently reproduced it.
What CISA requires
Apply updates per vendor instructions.
This deadline is binding on US federal civilian agencies under BOD 22-01. It is not a legal deadline for anyone else, but it is a useful urgency signal — CISA sets it by how actively the flaw is being used, not by CVSS.
Public exploit code
9 public repositories referencing this CVE have been catalogued on GitHub. Treat this as a strong signal to prioritise patching, not as a verified working exploit — many such repositories are scanners, write-ups or forks rather than functional code.
- ARPSyndicate/cvemon
- Advisory-Newsletter/Conti-Ransomware
- BunNYb8989/Conti
- Ostorlab/KEV
- Ostorlab/known_exploited_vulnerbilities_detectors
- SV223/TryHackMe-Conti
- YannickAtabong9/CONTI
- doylej123/jack-doyle-project
Showing 8 of 9. Full list in the trickest/cve dataset.
Vendor advisories
Primary sources
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Other Fortinet entries
See allFortiOS
Exposure of Sensitive Information to an Unauthorized Actor
CVE-2026-25089FortiSandbox
OS Command Injection
CVE-2026-39808FortiSandbox
OS Command Injection
CVE-2026-21643FortiClient EMS
SQL Injection
CVE-2026-35616FortiClient EMS
Improper Access Control
CVE-2026-24858Multiple Products
Authentication Bypass Using an Alternate Path or Channel
Source: CISA KEV catalog · last verified August 6, 2026. Rebuilt automatically twice a day.