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VulnerabilityPublished

CVE-2025-9110: QNAP Systems QTS · CWE-497

Affects QNAP Systems QTSSource CVE Database V5

0

Not known to be exploited · CVSS 2.7 Low : upgrade to 5.2.8.3332 build 20251128 when convenient.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 4.0 base score
2.7Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.2.8.3332 build 20251128, h5.3.1.3250 build 20250912, h5.2.8.3321 build 20251117
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade QTS to 5.2.8.3332 build 20251128; QuTS hero to h5.3.1.3250 build 20250912 or h5.2.8.3321 build 20251117.

Affected software

ProductAffectedFixed in
QNAP Systems Inc.QTSAffected
  • =>=5.2.0 <5.3.0
Fixed in
  • 5.2.8.3332 build 20251128
QNAP Systems Inc.QuTS heroAffected
  • ≥ h5.2.x, < h5.2.8.3321 build 20251117
  • ≥ h5.3.x, < h5.3.1.3250 build 20250912
Fixed in
  • h5.3.1.3250 build 20250912
  • h5.2.8.3321 build 20251117

AI-suggested

To mitigate CVE-2025-9110, European organizations should promptly update all affected QNAP QTS and QuTS hero devices to the patched versions: QTS 5.2.8.3332 build 20251128 or later, QuTS hero h5.2.8.3321 build 20251117 or later, and QuTS hero h5.3.1.3250 build 20250912 or later. Network segmentation should be employed to isolate NAS devices from untrusted networks, reducing exposure to remote attacks. Implement strict access controls and monitor network traffic for unusual activity targeting NAS devices. Disable unnecessary services and interfaces on QNAP devices to minimize attack vectors. Regularly audit device configurations and logs for signs of unauthorized access or data exfiltration attempts. Additionally, organizations should maintain an inventory of QNAP devices to ensure all are identified and updated. Employing intrusion detection/prevention systems (IDS/IPS) with signatures for QNAP-related exploits can provide early warnings. Finally, ensure backups are securely maintained to prevent data loss in case of exploitation.

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

References

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