CVE-2025-47208 QTS, QuTS hero

What is CVE-2025-47208?

CVE-2025-47208 is a medium-severity denial of service vulnerability in Qnap Qts, published on 2 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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 QuTS hero h5.2.6.3195 build 20250715 and later

Weakness: CWE-770

Which versions are affected by CVE-2025-47208?

It affects 2 products.

Products include Qnap Qts, Qnap Quts Hero.

How do I fix CVE-2025-47208?

No fix has been published for CVE-2025-47208 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-47208 being exploited?

There is no known exploitation of CVE-2025-47208 in the wild and no public exploit code.

Other vulnerabilities in Qnap Qts

• CVE-2020-2509 QNAP Network-Attached Storage (NAS) Command Injection Exploited Critical 9.8
• CVE-2018-19949 QNAP NAS File Station Command Injection Exploited Critical 9.8
• CVE-2019-7193 QNAP QTS Improper Input Validation Exploited Critical 9.8
• CVE-2018-19943 QNAP NAS File Station Cross-Site Scripting Exploited High 8.0
• CVE-2018-19953 QNAP NAS File Station Cross-Site Scripting Exploited Medium 6.1

All Qnap Qts vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xpcp-7r7v-4mfm.