What’s Vulnerable › Vulnerabilities
CVE-2021-28911
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-09-09 · updated 2026-06-17
- Weakness: CWE-307
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.
Affected products
- Bab-Technologie Eibport Firmware: before 3.9.1 — fixed in 3.9.1
How to fix
Upgrade to a fixed version: Bab-Technologie Eibport Firmware 3.9.1. Check the vendor advisory for mitigations.
References
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