Is CVE-2021-28909 in the CISA KEV catalog?

No. CVE-2021-28909 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28909?

CVE-2021-28909 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-28909?

CVE-2021-28909 has an EPSS score of 1.39% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28909?

Upgrade eibport firmware to 3.9.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-28909

CRITICAL

9.8

CVSS v3

NVD

Description

BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow unauthenticated attackers to access uncontrolled the login service at /webif/SecurityModule in a brute force attack. The password could be weak and default username is known as 'admin'. This is usable and part of an attack chain to gain SSH root access.

CWE-307

How to fix

Remediation Available

eibport firmwareNVD

Affected:< 3.9.1Fixed in:3.9.1CVE-2021-28909derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.39%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Third-Party Advisory1

psytester.github.io

Related Vulnerabilities

Other CWE-307 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-17240	Critical	9.8	40%	-	-
CVE-2023-29301	High	7.5	29%	-	-
CVE-2023-22960	High	7.5	28%	-	Fix
CVE-2020-15906	Critical	9.8	27%	-	Fix
CVE-2016-9361	Critical	9.8	20%	-	-
CVE-2024-39225	Critical	9.8	15%	-	-

Embed a live status badge for CVE-2021-28909

Markdown

[![CVE-2021-28909](https://tridentstack.com/cve/badge/CVE-2021-28909.svg)](https://tridentstack.com/cve/CVE-2021-28909)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-28909"><img src="https://tridentstack.com/cve/badge/CVE-2021-28909.svg" alt="CVE-2021-28909"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.