CVE-2021-28911

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-307 CWE-863

Affected software

No affected versions have been published.

Timeline

Published: Sep 9, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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