A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 2 products from qnap, from qnap organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-01-02T15:16:02.540
2026-01-05T20:12:40.680
Analyzed
CVSSv3.1: 6.5 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | qnap | quts_hero | h5.2.0.2737 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2782 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2789 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2802 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2823 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2851 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2860 | Yes |
| Operating System | qnap | quts_hero | h5.2.1.2929 | Yes |
| Operating System | qnap | quts_hero | h5.2.1.2940 | Yes |
| Operating System | qnap | quts_hero | h5.2.2.2952 | Yes |
| Operating System | qnap | quts_hero | h5.2.3.3006 | Yes |
| Operating System | qnap | quts_hero | h5.2.4.3070 | Yes |
| Operating System | qnap | quts_hero | h5.2.4.3079 | Yes |
| Operating System | qnap | quts_hero | h5.2.5.3138 | Yes |
| Operating System | qnap | quts_hero | h5.2.6.3195 | Yes |
| Operating System | qnap | quts_hero | h5.3.0.3115 | Yes |
| Operating System | qnap | quts_hero | h5.3.0.3145 | Yes |
| Operating System | qnap | quts_hero | h5.3.0.3192 | Yes |
| Operating System | qnap | qts | 5.2.0.2737 | Yes |
| Operating System | qnap | qts | 5.2.0.2744 | Yes |
| Operating System | qnap | qts | 5.2.0.2782 | Yes |
| Operating System | qnap | qts | 5.2.0.2802 | Yes |
| Operating System | qnap | qts | 5.2.0.2823 | Yes |
| Operating System | qnap | qts | 5.2.0.2851 | Yes |
| Operating System | qnap | qts | 5.2.0.2860 | Yes |
| Operating System | qnap | qts | 5.2.1.2930 | Yes |
| Operating System | qnap | qts | 5.2.2.2950 | Yes |
| Operating System | qnap | qts | 5.2.3.3006 | Yes |
| Operating System | qnap | qts | 5.2.4.3070 | Yes |
| Operating System | qnap | qts | 5.2.4.3079 | Yes |
| Operating System | qnap | qts | 5.2.4.3092 | Yes |
| Operating System | qnap | qts | 5.2.5.3145 | Yes |
| Operating System | qnap | qts | 5.2.6.3195 | Yes |
| Operating System | qnap | qts | 5.2.6.3229 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For qnap's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.