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CVE-2019-5591CISA KEV

Fortinet FortiOS Default Configuration Vulnerability

CISA lists this Fortinet FortiOS vulnerability as known exploited. The vendor's advisory has the fixed versions.

CISA KEVVendor advisoryNVD

CISA catalog record

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.

Product
FortiOS
Added to KEV
3 Nov 2021
Federal remediation due
3 May 2022
Known ransomware use
Yes

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Oct 12:55 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current

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