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CVE-2021-35240

6.5 · MEDIUM

A security researcher stored XSS via a Help Server setting.

Published Aug 31, 2021CWE-79EPSS 1.07%

Overview

CVE-2021-35240 is a medium-severity vulnerability. It was published on August 31, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.

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

Refdocumentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htmRefsupport.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_USRefsupport.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_USRefwww.solarwinds.com/trust-center/security-advisories/cve-2021-35240Refdocumentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htmRefsupport.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_USRefsupport.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_USRefwww.solarwinds.com/trust-center/security-advisories/cve-2021-35240

How CyberStrike helps

Frequently asked questions

What is CVE-2021-35240?

CVE-2021-35240 is a medium-severity vulnerability. It was published on August 31, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2021-35240?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-35240?

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-2021-35240?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-35240 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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