CVE-2025-59381 QTS, QuTS hero
Remote administrators can exploit a path traversal flaw to read unexpected files or system data on QNAP NAS devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-59381?
CVE-2025-59381 is a medium-severity path traversal vulnerability in Qnap Qts, published on 2 Jan 2026. An attacker needs administrator access to exploit it, 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 an administrator 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 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later QuTS hero h5.3.2.3354 build 20251225 and later
Weakness: CWE-22
Which versions are affected by CVE-2025-59381?
It affects 2 products.
Products include Qnap Qts, Qnap Quts Hero.
How do I fix CVE-2025-59381?
No fix has been published for CVE-2025-59381 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-2025-59381 being exploited?
There is no known exploitation of CVE-2025-59381 in the wild and no public exploit code.
Other vulnerabilities in Qnap Qts
Sources
Also known as GHSA-fj3g-cqvg-f3jx.