CVE-2021-26107

Name: CVE-2021-26107
Creator: NVD / NIST
Published: 2021-11-02T18:15:08.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2021-26107 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. An improper access control vulnerability [CWE-284] in FortiManager versions 6.4.4 and 6.4.5 may allow an authenticated attacker with a restricted user profile to modify the VPN tunnel status of other VDOMs using VPN Manager.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

An improper access control vulnerability [CWE-284] in FortiManager versions 6.4.4 and 6.4.5 may allow an authenticated attacker with a restricted user profile to modify the VPN tunnel status of other VDOMs using VPN Manager.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.50%

38.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Fortinet	Fortimanager	6.4.4
Fortinet	Fortimanager	6.4.5

References

https://fortiguard.com/advisory/FG-IR-21-043Broken Link
https://www.fortiguard.com/psirt?date=11-2021&risk=3Vendor Advisory
https://fortiguard.com/advisory/FG-IR-21-043Broken Link

Timeline

Published: Nov 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26107?

How severe is CVE-2021-26107?

CVE-2021-26107 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26107?

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-2021-26107?

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

Scan your code now

Source: NVD / NIST