CVE-2025-30271 QTS, QuTS hero

Medium 5.3 Published 29 Aug 2025 Updated 29 Aug 2025

Authenticated remote attackers can exploit a path traversal flaw in QNAP operating systems to read unauthorized files and system data.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-30271?

CVE-2025-30271 is a medium-severity path traversal vulnerability in Qnap Qts, published on 29 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A path traversal 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 read the contents of unexpected files or system data.

We have already fixed the vulnerability in the following versions: QTS 5.2.5.3145 build 20250526 and later QuTS hero h5.2.5.3138 build 20250519 and later

Weakness: CWE-22

Which versions are affected by CVE-2025-30271?

It affects 2 products.

Products include Qnap Qts, Qnap Quts Hero.

How do I fix CVE-2025-30271?

No fix has been published for CVE-2025-30271 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2025-30271 being exploited?

There is no known exploitation of CVE-2025-30271 in the wild and no public exploit code.

All Qnap Qts vulnerabilities

Sources

Also known as GHSA-39x8-8q4p-7578.