CVE-2021-42544

Name: CVE-2021-42544
Creator: NVD / NIST
Published: 2021-11-30T12:15:08.123+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.36%

Last modified Jun 17, 2026

CVE-2021-42544 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Missing Rate Limiting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on the Login Form allows an unauthenticated remote attacker to perform multiple login attempts, which facilitates gaining privileges.. EPSS estimates a 1.36% chance of exploitation in the next 30 days.

Description

Missing Rate Limiting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 on the Login Form allows an unauthenticated remote attacker to perform multiple login attempts, which facilitates gaining privileges.

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

1.36%

68.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Businessdnasolutions	Topease	<= 7.1.27

References

https://confluence.topease.ch/confluence/display/DOC/Release+NotesRelease Notes, Vendor Advisory
https://confluence.topease.ch/confluence/display/DOC/Release+NotesRelease Notes, Vendor Advisory

Timeline

Published: Nov 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42544?

How severe is CVE-2021-42544?

CVE-2021-42544 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42544?

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-2021-42544?

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

Scan your code now

Source: NVD / NIST