CVE-2021-24012

MEDIUM

FortiOS 6.4.0-6.4.4 - Improper Certificate Validation in LDAP SSLVPN Authentication

Title source: llm

Description

An improper following of a certificate's chain of trust vulnerability in FortiGate versions 6.4.0 to 6.4.4 may allow an LDAP user to connect to SSLVPN with any certificate that is signed by a trusted Certificate Authority.

References (1)

Core 1

Core References

Vendor Advisory x_refsource_confirm

https://fortiguard.com/advisory/FG-IR-21-018

Scores

CVSS v3 6.5

EPSS 0.0021

EPSS Percentile 42.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-295

Status published

Products (1)

fortinet/fortios 6.4.0 - 6.4.5

Published Jun 02, 2021

Tracked Since Feb 18, 2026