CVE-2021-36921

Name: CVE-2021-36921
Creator: NVD / NIST
Published: 2021-08-12T18:15:09.617+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.37%

Last modified Jun 17, 2026

CVE-2021-36921 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. AIMANAGER before B115 on MONITORAPP Application Insight Web Application Firewall (AIWAF) devices with Manager 2.1.0 has Improper Authentication. An attacker can gain administrative access by modifying the response to an authentication check request.. EPSS estimates a 1.37% chance of exploitation in the next 30 days.

Description

AIMANAGER before B115 on MONITORAPP Application Insight Web Application Firewall (AIWAF) devices with Manager 2.1.0 has Improper Authentication. An attacker can gain administrative access by modifying the response to an authentication check request.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.37%

68.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Monitorapp	Application Insight Manager	>= b107, < b115

References

https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0021/FEYE-2021-0021.mdThird Party Advisory
https://github.com/monitorapp-aicc/report/wiki/CVE-2021-36921Third Party Advisory
https://www.monitorapp.com/waf/Product, Vendor Advisory
https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0021/FEYE-2021-0021.mdThird Party Advisory
https://github.com/monitorapp-aicc/report/wiki/CVE-2021-36921Third Party Advisory
https://www.monitorapp.com/waf/Product, Vendor Advisory

Timeline

Published: Aug 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36921?

How severe is CVE-2021-36921?

CVE-2021-36921 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.37% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36921?

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-2021-36921?

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

Scan your code now

Source: NVD / NIST