CVE-2021-34357
6.9 · MEDIUMOverview
CVE-2021-34357 is a medium-severity vulnerability affecting qnap qmailagent. 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 and patches from qnap. Update qmailagent to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| qnap | qmailagent | >= 0, < 3.0.2 | Affected |
Frequently Asked Questions
What is CVE-2021-34357?
CVE-2021-34357 is a medium-severity vulnerability affecting qnap qmailagent. 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 and patches from qnap. Update qmailagent to the latest patched version. 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's AI-powered security agents can automatically detect CVE-2021-34357 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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