CVE-2021-26114

Name: CVE-2021-26114
Creator: NVD / NIST
Published: 2022-04-06T10:15:07.933+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.49%

Last modified Jun 17, 2026

CVE-2021-26114 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Multiple improper neutralization of special elements used in an SQL command vulnerabilities in FortiWAN before 4.5.9 may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

Description

Multiple improper neutralization of special elements used in an SQL command vulnerabilities in FortiWAN before 4.5.9 may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.49%

70.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Fortinet	Fortiwan	<= 4.5.8

References

https://fortiguard.com/psirt/FG-IR-21-062Patch, Vendor Advisory
https://fortiguard.com/psirt/FG-IR-21-062Patch, Vendor Advisory

Timeline

Published: Apr 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26114?

How severe is CVE-2021-26114?

CVE-2021-26114 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26114?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26114?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST