BAB TECHNOLOGIE GmbH eibPort V3.

published 2021-09-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15565

cvss: 7.2; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

BAB TECHNOLOGIE GmbH eibPort V3. Each device has its own unique hard coded and weak root SSH key passphrase known as 'eibPort string'. This is usable and the final part of an attack chain to gain SSH root access.

Patch / fix

fixed in 1

bab-technologie eibport_firmware 3.9.1

Exploit prediction

1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness

CWE-521 Weak Password Requirements
CWE-798 Use of Hard-coded Credentials

References

psytester.github.io /CVE-2021-28912
third-party-advisory

Sources

CVE List CVE-2021-28912
NVD CVE-2021-28912

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary