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CVE-2021-27498

7.5 · HIGH

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may result in a denial-of-service condition.

Published May 12, 2022CWE-617EPSS 1.35%

Overview

CVE-2021-27498 is a high-severity vulnerability. It was published on May 12, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may result in a denial-of-service condition.

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

GitHubgithub.com/EIPStackGroup/OpENerCISAwww.cisa.gov/uscert/ics/advisories/icsa-21-105-02GitHubgithub.com/EIPStackGroup/OpENerCISAwww.cisa.gov/uscert/ics/advisories/icsa-21-105-02

How CyberStrike helps

Frequently asked questions

What is CVE-2021-27498?

CVE-2021-27498 is a high-severity vulnerability. It was published on May 12, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-27498?

This vulnerability has a CVSS 3.1 base score of 7.5, 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-2021-27498?

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-2021-27498?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-27498 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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