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Security ID : QSA-25-51

Multiple Vulnerabilities in QTS and QuTS hero


  • Release date : January 3, 2026

  • CVE identifier : CVE-2025-9110, CVE-2025-48721, CVE-2025-59380, CVE-2025-59381, CVE-2025-62852

  • Affected products: QTS 5.2.x; QuTS hero h5.2.x, h5.3.x

Severity

Moderate

Status

Resolved


Summary

Multiple vulnerabilities have been reported to affect several QNAP operating system versions:

  • CVE-2025-9110: Exposure of sensitive system information to an unauthorized control sphere vulnerability
    If exploited, remote attackers can read application data.
  • CVE-2025-48721, CVE-2025-62852: Buffer overflow vulnerabilities
    If a remote attacker gains access to an administrator account, they can then exploit the vulnerabilities to modify memory or crash processes.
  • CVE-2025-59380, CVE-2025-59381: Path traversal vulnerabilities
    If a remote attacker gains access to an administrator account, they can then exploit the vulnerabilities to read the contents of unexpected files or system data.

  

We have already fixed the vulnerabilities in the following versions:

Affected Product Fixed Version
QTS 5.2.x QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.x QuTS hero h5.2.8.3321 build 20251117 and later
QuTS hero h5.3.x QuTS hero h5.3.1.3250 build 20250912 and later

Recommendation

To secure your device, we 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 in to QTS or QuTS hero as an administrator.
  2. Go to Control Panel > System > Firmware Update.
  3. Under Live Update, click Check for Update.
    The system 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.

  

Attachment

Acknowledgements:
Nanyu Zhong @ VARAS IIE
Yuze Wu(h1J4cker)
coral

Revision History:
V1.0 (January 3, 2026) - Published

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