CVE-2019-5591

6.5 MEDIUM CISA KEV - Actively Exploited

Published: August 14, 2020 Modified: October 24, 2025

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://www.fortiguard.com/psirt/FG-IR-19-037

Source: psirt@fortinet.com

Mitigation Vendor Advisory

https://www.fortiguard.com/psirt/FG-IR-19-037

Source: af854a3a-2127-422b-91ae-364da2661108

Mitigation Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5591

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

6.5 / 10.0

EPSS (Exploit Probability)

49.2%

98th percentile

Exploitation Status

Actively Exploited

Remediation due: 2022-05-03

Weaknesses (CWE)

CWE-306 CWE-306

Affected Vendors

fortinet

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