DOM-Based XSS Vulnerability in QTS and QuTS hero

Summary

A DOM-based XSS vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to inject malicious code.

We have already fixed this vulnerability in the following versions:

• QTS 4.5.3.1652 Build 20210428 and later
• QuTS hero h4.5.2.1638 Build 20210414 and later
• QuTScloud c4.5.5.1656 Build 20210503 and later

QNAP NAS running QTS 4.3.6 and QTS 4.3.3 are not affected.

Recommendation

To secure your device, we strongly recommend regularly updating your system to the latest version to benefit from vulnerability fixes. You can check the product support status to see the latest updates available to your NAS model.

Updating QTS or QuTS hero

1. Log on to QTS or QuTS hero as administrator.
2. Go to Control Panel > System > Firmware Update.
3. Under Live Update, click Check for Update.
   QTS or QuTS hero downloads and installs the latest available update.

Tip: You can also download the update from the QNAP website. Go to Support > Download Center and then perform a manual update for your specific device.