CVE Watch—

CVE-2019-5591

Fortinet FortiOS Default Configuration Vulnerability

CVSS

—

No CVSS

EPSS

18.6%

p97

KEV

YES

Nov 3, 2021

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

18.6%EPSS · 30 days18.6%

2026-06-302026-07-16

KEV catalog record

Product

Fortinet / FortiOS

Vulnerability

Fortinet FortiOS Default Configuration Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

May 3, 2022

Known ransomware use

Summary description

Fortinet FortiOS contains a default configuration vulnerability that may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the Lightweight Directory Access Protocol (LDAP) server.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2019-5591

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