CVE-2025-52861 VioStor
Remote administrators can exploit a path traversal flaw in QNAP VioStor to read unexpected files or system data.
- 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-2025-52861?
CVE-2025-52861 is a high-severity path traversal vulnerability in QNAP Systems Inc. VioStor, published on 29 Aug 2025. 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 VioStor. 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 version: VioStor 5.1.6 build 20250621 and later
Weakness: CWE-22
Which versions are affected by CVE-2025-52861?
How do I fix CVE-2025-52861?
No fix has been published for CVE-2025-52861 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-2025-52861 being exploited?
There is no known exploitation of CVE-2025-52861 in the wild and no public exploit code.
Sources
Also known as GHSA-9277-pf66-9w4c.