CVE-2025-9110Network attack vector

Unauthenticated application-data disclosure via undisclosed mechanism

Published Jan 2, 2026 · Updated Jan 2, 2026

Information disclosure in QNAP QTS 5.2.x and QuTS hero h5.2.x and h5.3.x allows remote attackers to read application data. QNAP has not disclosed the affected component, request path, or operation that exposes the data. Network access without authentication or user interaction is sufficient, and the reported consequence is limited to reading application data.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in QNAP QTS 5.2.x and QuTS hero h5.2.x and h5.3.x allows remote attackers to read application data. QNAP has not disclosed the affected component, request path, or operation that exposes the data. Network access without authentication or user interaction is sufficient, and the reported consequence is limited to reading application data.

The record

CVE
CVE-2025-9110
Published
Jan 2, 2026
Updated
Jan 2, 2026
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-497, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=h5.2.x <h5.2.8.3321 build 20251117
  2. Affected versionversion=h5.3.x <h5.3.1.3250 build 20250912

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h5.2.x <h5.2.8.3321 build 20251117; version=h5.3.x <h5.3.1.3250 build 20250912
Linn Products Limited · QTSversion=5.2.x <5.2.8.3332 build 20251128

Published CVSS scores

2.7QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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