CVE-2021-28911

9.8 criticalEPSS 1.7%

Critical (9.8) in bab-technologie eibport firmware. EPSS 1.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
CWEs: CWE-307, CWE-863
Published: 2021-09-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

bab-technologie:eibport_firmware

References

https://psytester.github.io/CVE-2021-28911
https://psytester.github.io/CVE-2021-28911

Check your stack JSON