Critical severity9.8NVD Advisory· Published Sep 9, 2021· Updated Jun 17, 2026
CVE-2021-28911
CVE-2021-28911
Description
BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow unauthenticated attackers access to /tmp path which contains some sensitive data (e.g. device serial number). Having those info, a possible loginId can be self-calculated in a brute force attack against BMX interface. This is usable and part of an attack chain to gain SSH root access.
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Affected products
2- BAB TECHNOLOGIE GmbH/eibPort V3description
- Range: <3.9.1
Patches
Vulnerability mechanics
References
1- psytester.github.io/CVE-2021-28911nvdThird Party Advisory
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