What’s Vulnerable › Vulnerabilities

CVE-2019-5591: Fortinet FortiOS Default Configuration Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 18.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-08-14 · updated 2026-08-15
• Weakness: CWE-306

Description

A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server.

Affected products

• Fortinet FortiOS (FortiGate): through 6.2.0

References

• https://www.fortiguard.com/psirt/FG-IR-19-037
• https://www.fortiguard.com/psirt/FG-IR-19-037
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5591

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