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CVE-2021-28911

CRITICALCVSS 9.8/10EPSS 1.60%

Last modified

CVE-2021-28911 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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). EPSS estimates a 1.60% chance of exploitation in the next 30 days.

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
9.8/10

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

EPSS Probability
1.60%

72.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Bab-TechnologieEibport Firmware< 3.9.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-28911?
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.
How severe is CVE-2021-28911?
CVE-2021-28911 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.
How do I fix CVE-2021-28911?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28911?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST