Cyber Resilience

CVE-2022-22520

Medium

Published: 14 September 2022

Published
14 September 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0030 53.6th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-22520 is a medium-severity Observable Response Discrepancy (CWE-204) vulnerability in Mbconnectline Mbconnect24. Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 46.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A remote, unauthenticated attacker can enumerate valid users by sending specific requests to the webservice of MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2.

CWE(s)
CWE-204

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

mbconnectline
mbconnect24
≤ 2.11.2
mbconnectline
mymbconnect24
≤ 2.11.2
helmholz
myrex24
≤ 2.11.2
helmholz
myrex24.virtual
≤ 2.11.2

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-30 Concealment and Misdirection
addresses: CWE-204

Fake or randomized responses remove distinguishable success/failure signals attackers rely on.

SI-11 Error Handling
addresses: CWE-204

Eliminates distinguishable response discrepancies in error conditions that could be exploited for reconnaissance.

References