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CVE-2021-42027

7.4 · HIGH

A vulnerability has been identified in SINUMERIK Edge (All versions < V3.2).

Published Dec 14, 2021CWE-295EPSS 0.50%

Overview

CVE-2021-42027 is a high-severity vulnerability. It was published on December 14, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability has been identified in SINUMERIK Edge (All versions < V3.2). The affected software does not properly validate the server certificate when initiating a TLS connection. This could allow an attacker to spoof a trusted entity by interfering in the communication path between the client and the intended server.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcert-portal.siemens.com/productcert/pdf/ssa-523250.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-523250.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2021-42027?

CVE-2021-42027 is a high-severity vulnerability. It was published on December 14, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).

How severe is CVE-2021-42027?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-42027?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-42027?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-42027 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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