CVE-2021-34574 json
Password policy evasion in products of MB connect line and Helmholz
published 2021-08-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21224
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
Affected products
- MB connect line mymbCONNECT24
- MB connect line mbCONNECT24
- Helmholz myREX24
- Helmholz myREX24.virtual
Classification
- Weakness
-
- CWE-669 Incorrect Resource Transfer Between Spheres
References
-
cert.vde.com
/en/advisories/VDE-2022-039
third-party-advisory
-
cert.vde.com
/en/advisories/VDE-2021-030
third-party-advisory
Sources
- CVE List CVE-2021-34574
- NVD CVE-2021-34574
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.