BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow unauthenticated attackers…
Priority MEDIUM 45CWE-307Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-307.
Summary
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.
Why it matters now
EPSS 0.01653 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:bab-technologie:eibport_firmware:*:*:*:*:*:*:*:* | before 3.9.1 | Vulnerable | Bab-technologie |
| cpe:2.3:h:bab-technologie:eibport:v3:*:*:*:*:*:*:* | v3 | Running on | Bab-technologie |
- cpe:2.3:o:bab-technologie:eibport_firmware:*:*:*:*:*:*:*:* Versions before 3.9.1 Vulnerable ·Bab-technologie
- cpe:2.3:h:bab-technologie:eibport:v3:*:*:*:*:*:*:* Versions v3 Running on ·Bab-technologie
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-28911
- 2026-10-03 Alias added: GHSA-45rc-fw3m-7fq5
References
More Bab-technologie Eibport Firmware vulnerabilities
- TI-2021-09862 BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow unauthenticated attackers… CVSS 3.1CRITICAL 9.8
- TI-2021-09858 BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow unauthenticated attackers to… CVSS 3.1CRITICAL 9.8
- TI-2020-15054 BAB TECHNOLOGIE GmbH eibPort V3 prior to 3.8.3 devices allow denial of service… CVSS 3.1HIGH 7.5
- TI-2021-09859 BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 contains basic SSRF vulnerability. CVSS 3.1HIGH 7.5
- TI-2021-09861 BAB TECHNOLOGIE GmbH eibPort V3. CVSS 3.1HIGH 7.2
- TI-2021-09863 BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow the user to set a weak password… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-28911 · CVE Program
- CVE-2021-28911 · NVD
- FIRST EPSS
- GHSA-45rc-fw3m-7fq5 · GitHub Advisory Database · CC BY 4.0
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