High severity · published Jan 2, 2026
CVE-2025-9110
An exposure of sensitive system information to an unauthorized control sphere vulnerability has been reported to affect several QNAP operating system versions
7.5
CVSS
0.5%
EPSS
No
On KEV
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 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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QT
Qts · Qnap
5.2.0.2737; 5.2.0.2744; 5.2.0.2782; 5.2.0.2802; 5.2.0.2823; 5.2.0.2851; +12 more · source: NVD
QH
Quts Hero · Qnap
h5.2.0.2737; h5.2.0.2782; h5.2.0.2789; h5.2.0.2802; h5.2.0.2823; h5.2.0.2851; +14 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9110
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9110
Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-25-51
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