CVE-2020-35557

mediumpriority · track · 26EPSS 0.010 · 63 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.00% (63rd) EPSS

CVSS 4 · medium

Is it mine?

15 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · cisa_csaf_ot · helmholz_psirt

EPSS · scored 2026-10-22

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedmb_connect_line_psirt
CVE-2020-12528, CVE-2020-12529, CVE-2020-35560, CVE-2020-12530, CVE-2020-35563, CVE-2020-35564, CVE-2020-35569, CVE-2020-35559, Update to version >= 2.7.1 CVE-2020-10384: Update to version 2.6.2 to close any known way to get to www-data. Note: This issue only exists up until version 2.6.1 and has already been addressed in >= 2.6.2 CVE-2020-35567: None Note: A proper fix for the underlying issue will come with a future architectural core-system-update. CVE-2020-35565: None Mitigation: Activate bruteforce detection via Security → Fail2Ban → WebLogin Note: A proper fix for the underlying issue will come with a future architectural core-system-update. To further increase the security level of your account enable MFA. CVE-2020-35561: Update to version 2.12.1 Update A, 2022-09-07: CVE-2020-35557, CVE-2020-35570, CVE-2020-35558, CVE-2020-35566, CVE-2020-12527, CVE-2020-35568: Update to version 2.12.1
Fixedhelmholz_psirt
Update to version 2.12.1
MitigationmymbCONNECT24cisa_csaf_ot
Additional details can be found on MB connect line's website.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · CISA US

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · cve@mitre.org USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · Helmholz PSIRT

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · MB connect line PSIRT

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimaryCWE-269USCWE-269USCWE-269US

affected products (15)

Products and version ranges known to be affected.

mymbCONNECT24: v2.6.1 and priorall versionscisa_csaf_otUS
MB connect line mymbCONNECT24≤ 2.6.1cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Helmholz myREX24≤ 2.11.2helmholz_psirtDE
Helmholz myREX24all versionsfixedhelmholz_psirtDE
Helmholz myREX24.virtual≤ 2.11.2helmholz_psirtDE
Helmholz myREX24.virtualall versionsfixedhelmholz_psirtDE
MB connect line mbCONNECT24≤ 2.11.2mb_connect_line_psirtDE
MB connect line mbCONNECT24all versionsfixedmb_connect_line_psirtDE
MB connect line mymbCONNECT24≤ 2.11.2mb_connect_line_psirtDE
MB connect line mymbCONNECT24all versionsfixedmb_connect_line_psirtDE
helmholz myrex24≤ 2.11.2nvdUScpe:2.3:a:helmholz:myrex24:*:*:*:*:*:*:*:*
helmholz myrex24.virtual≤ 2.11.2nvdUScpe:2.3:a:helmholz:myrex24.virtual:*:*:*:*:*:*:*:*
mbconnectline mbconnect24≤ 2.11.2nvdUScpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:*
mbconnectline mymbconnect24≤ 2.11.2nvdUScpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

VDE-2021-003MB connect line: Multiple vulnerabilites in mymbCONNECT24 and mbCONNECT24 (Update A)2022-09-07csaf · mb_connect_line_psirtDE
Multiple vulnerabilities have been found in mymbCONNECT24 and mbCONNECT24. Update A, 2022-09-07: Affected Products: updated affected versions due to incomplete fixes of some CVEs. See Solution for details. Solution: updated version information. Solution: Added Fix for CVE-2020-35561. Solution: Added MFA remark for CVE-2020-35565.
VDE-2022-039Helmholz: Multiple vulnerabilites in myREX24 and myREX24.virtual2022-09-07csaf · helmholz_psirtDE
Multiple vulnerabilities have been found in myREX24 and myREX24.virtual.
ICSA-21-061-03MB connect line mbCONNECT24, mymbCONNECT242021-03-02icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow a remote attacker to gain unauthorized access to arbitrary information or allow remote code execution.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot helmholz_psirt mb_connect_line_psirt nvd NVD CVE.org MITRE

published 2021-02-16modified 2026-06-17

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references (13)

External citations — patches, advisories, analysis.

scry

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