What’s Vulnerable › Vulnerabilities

CVE-2022-22520: User enumeration vulnerability in MB connect line and Helmholz products

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-14 · updated 2026-06-17
• Weakness: CWE-204

Description

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.

Affected products

• Helmholz myREX24: through 2.11.2
• Helmholz myREX24.virtual: through 2.11.2
• MB connect line mbCONNECT24: through 2.11.2
• MB connect line mymbCONNECT24: through 2.11.2

References

• https://cert.vde.com/en/advisories/VDE-2022-011
• https://cert.vde.com/en/advisories/VDE-2022-039
• https://cert.vde.com/en/advisories/VDE-2022-011
• https://cert.vde.com/en/advisories/VDE-2022-039

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