CVE-2021-34580

HIGH

mbconnect24 and mymbconnect24 <= 2.9.0 - Unauthenticated User Enumeration via Login Response Discrepancy

Title source: llm
STIX 2.1

Description

In mymbCONNECT24, mbCONNECT24 <= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted invalid login attempts.

References (1)

Core 1
Core References
Third Party Advisory x_refsource_confirm
https://cert.vde.com/en/advisories/VDE-2021-037/

Scores

CVSS v3 7.5
EPSS 0.0100
EPSS Percentile 58.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-204 CWE-203
Status published
Products (2)
mbconnectline/mbconnect24 < 2.9.0
mbconnectline/mymbconnect24 < 2.9.0
Published Oct 27, 2021
Tracked Since Feb 18, 2026