CVE-2025-66278 File Station 5
Authenticated remote attackers can exploit a path traversal flaw in QNAP File Station 5 to read arbitrary 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-2025-66278?
CVE-2025-66278 is a low-severity path traversal vulnerability in Qnap File Station, published on 11 Feb 2026. 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 File Station 5. 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 version: File Station 5 5.5.6.5190 and later
Weakness: CWE-22
Which versions are affected by CVE-2025-66278?
It affects 1 product.
Products include Qnap File Station.
How do I fix CVE-2025-66278?
No fix has been published for CVE-2025-66278 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-2025-66278 being exploited?
There is no known exploitation of CVE-2025-66278 in the wild and no public exploit code.
Other vulnerabilities in Qnap File Station
Sources
Also known as GHSA-8863-jvcv-whf3.