CVE-2021-32591

Name: CVE-2021-32591
Creator: NVD / NIST
Published: 2021-12-08T12:15:07.737+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2021-32591 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A missing cryptographic steps vulnerability in the function that encrypts users' LDAP and RADIUS credentials in FortiSandbox before 4.0.1, FortiWeb before 6.3.12, FortiADC before 6.2.1, FortiMail 7.0.1 and earlier may allow an attacker in possession of the password store to compromise the confidentiality of the encrypted secrets.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

A missing cryptographic steps vulnerability in the function that encrypts users' LDAP and RADIUS credentials in FortiSandbox before 4.0.1, FortiWeb before 6.3.12, FortiADC before 6.2.1, FortiMail 7.0.1 and earlier may allow an attacker in possession of the password store to compromise the confidentiality of the encrypted secrets.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.90%

55.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Fortinet	Fortiadc	>= 5.0.0, <= 5.4.4
Fortinet	Fortiadc	>= 6.0.0, <= 6.0.3
Fortinet	Fortiadc	>= 6.1.0, <= 6.1.3
Fortinet	Fortiadc	6.2.0
Fortinet	Fortiadc	6.2.1
Fortinet	Fortimail	All versions
Fortinet	Fortimail	>= 5.0, <= 5.6.3
Fortinet	Fortimail	>= 6.0.0, <= 6.0.11
Fortinet	Fortimail	>= 6.2.0, <= 6.2.7
Fortinet	Fortimail	>= 6.4.0, <= 6.4.5
Fortinet	Fortimail	7.0.0
Fortinet	Fortimail	7.0.1
Fortinet	Fortisandbox	>= 3.2.0, <= 3.2.2
Fortinet	Fortisandbox	4.0.0
Fortinet	Fortiweb	>= 5.7.0, <= 5.7.3
Fortinet	Fortiweb	>= 5.8.0, <= 5.8.7
Fortinet	Fortiweb	>= 6.0.0, <= 6.0.7
Fortinet	Fortiweb	>= 6.1.0, <= 6.1.2
Fortinet	Fortiweb	>= 6.2.0, <= 6.2.4
Fortinet	Fortiweb	>= 6.3.0, <= 6.3.11
Fortinet	Fortiweb	5.9.0
Fortinet	Fortiweb	5.9.1

References

https://fortiguard.com/advisory/FG-IR-20-222Patch, Vendor Advisory
https://fortiguard.com/advisory/FG-IR-20-222Patch, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-32591?

How severe is CVE-2021-32591?

CVE-2021-32591 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32591?

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-2021-32591?

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

Scan your code now

Source: NVD / NIST