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CVE-2021-34357

6.9 · MEDIUM

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent.

Published Nov 13, 2021CWE-79EPSS 0.71%

Overview

CVE-2021-34357 is a medium-severity vulnerability. It was published on November 13, 2021 and has a CVSS 3.1 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later

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

Refwww.qnap.com/en/security-advisory/qsa-21-47Refwww.qnap.com/en/security-advisory/qsa-21-47

How CyberStrike helps

Frequently asked questions

What is CVE-2021-34357?

CVE-2021-34357 is a medium-severity vulnerability. It was published on November 13, 2021 and has a CVSS 3.1 base score of 6.9 (MEDIUM).

How severe is CVE-2021-34357?

This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-34357?

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-2021-34357?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-34357 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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