CVE-2021-32541

Name: CVE-2021-32541
Creator: NVD / NIST
Published: 2021-05-28T08:15:07.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.51%

Last modified Jun 17, 2026

CVE-2021-32541 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The CTS Web transaction system related to authentication and session management is implemented incorrectly, which allows remote unauthenticated attackers can send a large number of valid usernames, and force those logged-in account to log out, causing the user to be unable to access the services. EPSS estimates a 1.51% chance of exploitation in the next 30 days.

Description

The CTS Web transaction system related to authentication and session management is implemented incorrectly, which allows remote unauthenticated attackers can send a large number of valid usernames, and force those logged-in account to log out, causing the user to be unable to access the services

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.51%

71.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Sysjust	Cts Web	< 2021.3.24

References

https://www.chtsecurity.com/news/40e165e2-e539-49bc-bcf1-e3b27c29e344Third Party Advisory
https://www.twcert.org.tw/tw/cp-132-4757-893eb-1.htmlThird Party Advisory
https://www.chtsecurity.com/news/40e165e2-e539-49bc-bcf1-e3b27c29e344Third Party Advisory
https://www.twcert.org.tw/tw/cp-132-4757-893eb-1.htmlThird Party Advisory

Timeline

Published: May 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32541?

How severe is CVE-2021-32541?

CVE-2021-32541 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32541?

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-2021-32541?

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

Scan your code now

Source: NVD / NIST