CVE-2025-9110
Published: 02 January 2026
Summary
CVE-2025-9110 is a high-severity Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497) vulnerability in Qnap Quts Hero. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 6.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Ongoing reviews detect and remove sensitive system information before it reaches publicly accessible systems.
Employs detection to prevent unauthorized mining of sensitive system information from being exfiltrated to external control spheres.
Documenting where system information is processed and stored prevents exposure to unauthorized control spheres.
The control stops sensitive system information from crossing into unauthorized control spheres through EM emanations.
Authorization and minimization requirements keep PII out of test/research control spheres that often lack production-grade protections.
Documented categorization of system information reduces the chance that sensitive internals are left exposed to unauthorized spheres.
System information is concealed or replaced with decoys, reducing leakage to unauthorized observers.
Ensures sensitive system information is not disclosed outside the intended control sphere through error output.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct remote unauthenticated info disclosure in public-facing QNAP NAS service enables exploitation of public-facing apps (T1190) and yields system information (T1082).
NVD Description
An exposure of sensitive system information to an unauthorized control sphere vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to read application data. We have already fixed the vulnerability…
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in the following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later QuTS hero h5.3.1.3250 build 20250912 and later
Deeper analysisAI
CVE-2025-9110 is an exposure of sensitive system information to an unauthorized control sphere vulnerability (CWE-497) that affects several versions of QNAP's QTS and QuTS hero operating systems. Published on 2026-01-02, it carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), highlighting a high-impact confidentiality issue exploitable remotely with low complexity and no authentication or user interaction required.
Remote, unauthenticated attackers can exploit the vulnerability over the network to read sensitive application data, potentially exposing critical system information to unauthorized parties.
QNAP has fixed the vulnerability in QTS 5.2.8.3332 build 20251128 and later, QuTS hero h5.2.8.3321 build 20251117 and later, and QuTS hero h5.3.1.3250 build 20250912 and later. Additional details are available in the QNAP security advisory at https://www.qnap.com/en/security-advisory/qsa-25-51.
Details
- CWE(s)