What is CVE-2020-12528?

CVE-2020-12528 is a medium-severity vulnerability in Mb Connect Line Mbconnect24, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2021-03-02.

How severe is CVE-2020-12528?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Privilege escalation in Mb Connect Line Mbconnect24

CVE-2020-12528

An issue was discovered in MB connect line mymbCONNECT24 and mbCONNECT24 software in all versions through V2.6.2. Improper use of access validation allows a logged in user to kill web2go sessions in the account he should not have access to.

Vulnerability class: Privilege Escalation

Published 2021-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (56.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.000

Affected products

Mb Connect Line Mbconnect24 — versions 2.6.2
Mb Connect Line Mymbconnect24 — versions 2.6.2
Mbconnectline Mbconnect24
Mbconnectline Mymbconnect24

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

cert.vde.com/de-de/advisories/vde-2021-003 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-12528?: CVE-2020-12528 is a medium-severity vulnerability in Mb Connect Line Mbconnect24, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2021-03-02.
How severe is CVE-2020-12528?: Medium severity. CVSS v3 base score is 6.5 out of 10.