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Medium6.5QNAP

Medium [CVE-2025-47208] QTS: allocation of resources without limits or throttling vulnerability has been reported to affect several QNAP operating system…

This medium-severity QNAP advisory covers CVE-2025-47208 affecting QTS 5.2.x, QuTS hero h5.2.x, QuTS hero h5.3.x.

CVE-2025-47208 Published Jan 2, 2026Updated by vendor Jun 17, 2026
Affected products & platforms
QNAPQTSQuTS hero
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Summary

An allocation of resources without limits or throttling vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to prevent other systems, applications, or processes from accessing the same type of resource.

We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later

Affected products named by the advisory: QTS 5.2.x; QuTS hero h5.2.x; QuTS hero h5.3.x.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Fixed 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
  • QTS 5.2.x

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected QNAP app / operating system to a fixed release: 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, QTS 5.2.x.

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

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