CVE-2021-34574

Name: CVE-2021-34574
Creator: NVD / NIST
Published: 2021-08-02T11:15:11.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2021-34574 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.

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

0.66%

46.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mbconnectline	Mbconnect24	<= 2.11.2
Mbconnectline	Mymbconnect24	<= 2.11.2
Helmholz	Myrex24	<= 2.11.2
Helmholz	Myrex24.Virtual	<= 2.11.2

References

https://cert.vde.com/en/advisories/VDE-2021-030Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2022-039Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2021-030Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2022-039Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-34574?

How severe is CVE-2021-34574?

CVE-2021-34574 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34574?

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-2021-34574?

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

Scan your code now

Source: NVD / NIST