Medium severity · published Feb 16, 2021
CVE-2020-35557
An issue in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 allows a logged in user to see devices in the…
6.5
CVSS
1%
EPSS
No
On KEV
Description
An issue in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 allows a logged in user to see devices in the account he should not have access to due to improper use of access validation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
Mbconnect24 · Mbconnectline
through 2.11.2 · source: NVD
MY
Mymbconnect24 · Mbconnectline
through 2.11.2 · source: NVD
MY
Myrex24 · Helmholz
through 2.11.2 · source: NVD
MY
Myrex24.virtual · Helmholz
through 2.11.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35557
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35557
Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2021-003
Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2022-039
Vendor Advisory
https://mbconnectline.com/security-advice/
More from Myrex24
8.2
CVE-2025-3090
MB connect line: Missing Authentication in mbCONNECT24/mymbCONNECT24
7.5
CVE-2025-3092
MB connect line: Observable response discrepancy in mbCONNECT24/mymbCONNECT24
7.5
CVE-2025-3091
MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24
7.5
CVE-2020-35558
An issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual through 2.11.2
6.5
CVE-2020-12527
An issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2
