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
- Log in to QTS or QuTS hero as an administrator.
- Go to Control Panel > System > Firmware Update.
- 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