CVE-2020-12812 - Vulnerability Details - OpenCVE

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is in the KEV database since Nov. 3, 2021.

The EPSS score is 0.47037.

Exploitation active

Automatable yes

Technical Impact total

Vendors	Products
Fortinet	Fortios

Configuration 1 [-]

OR	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios:6.4.0:::::::*

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://fortiguard.com/psirt/FG-IR-19-283
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812

History

Wed, 22 Oct 2025 00:15:00 +0000

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812

Tue, 21 Oct 2025 20:30:00 +0000

Type	Values Removed	Values Added
References	https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812

Tue, 21 Oct 2025 19:30:00 +0000

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812

Tue, 04 Feb 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		kev `{'dateAdded': '2021-11-03'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: fortinet

Published: 2020-07-24T22:28:43.000Z

Updated: 2025-10-21T23:35:38.889Z

Reserved: 2020-05-12T00:00:00.000Z

Link: CVE-2020-12812

Vulnrichment

Updated: 2024-08-04T12:04:22.855Z

NVD

Status : Analyzed

Published: 2020-07-24T23:15:12.003

Modified: 2025-10-24T12:53:49.213

Link: CVE-2020-12812

Redhat

No data.

OpenCVE Enrichment

No data.

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