Is CVE-2020-12812 actively exploited?

CVE-2020-12812 has no public evidence of in-the-wild exploitation as of 2025-10-24.

What is the CVSS score for CVE-2020-12812?

CVE-2020-12812 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2020-12812?

Patch guidance is available from fortinet security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-12812.

Fix CVE-2020-12812 - CRITICAL fortinet fortios

Q: Which products are affected by CVE-2020-12812?

3 products: fortinet fortios, fortinet fortios, fortinet fortios.

Description

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-178 CWE-287 · Improper Authentication CWE-287 · Improper Authentication

Metadata

Primary Vendor: FORTINET
Published: 7/24/2020
Last Modified: 10/24/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-12812

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary