CVE-2021-26103

Published: Dec 8, 2021Modified: Jun 17, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

An insufficient verification of data authenticity vulnerability (CWE-345) in the user interface of FortiProxy verison 2.0.3 and below, 1.2.11 and below and FortiGate verison 7.0.0, 6.4.6 and below, 6.2.9 and below of SSL VPN portal may allow a remote, unauthenticated attacker to conduct a cross-site request forgery (CSRF) attack . Only SSL VPN in web mode or full mode are impacted by this vulnerability.

Affected (7)

Products: Fortinet: Fortios, Fortiproxy

Fortinet

2 products

Fortios

Fortiproxy

Configuration A

7 vulnerable

Vulnerable Software	Affected Versions
Fortinet Fortios	5.6.0 ≤ version ≤ 5.6.14
Fortinet Fortios	6.0.0 ≤ version ≤ 6.0.13
Fortinet Fortios	6.2.0 ≤ version ≤ 6.2.9
Fortinet Fortios	6.4.0 ≤ version ≤ 6.4.6
Fortinet Fortios	Version 7.0.0
Fortinet Fortiproxy	1.2.0 ≤ version ≤ 1.2.11
Fortinet Fortiproxy	2.0.0 ≤ version ≤ 2.0.3

Related CWEs

CWE-345

Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

References (2)

https://fortiguard.com/advisory/FG-IR-20-158

Source: psirt@fortinet.com

PatchVendor Advisory

https://fortiguard.com/advisory/FG-IR-20-158

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

PatchVendor Advisory

Timeline

No history available yet.