CVE-2025-30261 Qsync Central
Authenticated remote attackers can cause denial of service in QNAP Qsync Central by exhausting resources without limits.
- 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-2025-30261?
CVE-2025-30261 is a high-severity denial of service vulnerability in Qnap Qsync Central, published on 29 Aug 2025. 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 Qsync Central. 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 version: Qsync Central 5.0.0.0 ( 2025/06/13 ) and later
Weakness: CWE-770
Which versions are affected by CVE-2025-30261?
It affects 1 product.
Products include Qnap Qsync Central.
How do I fix CVE-2025-30261?
No fix has been published for CVE-2025-30261 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-2025-30261 being exploited?
There is no known exploitation of CVE-2025-30261 in the wild and no public exploit code.
Other vulnerabilities in Qnap Qsync Central
Sources
Also known as GHSA-5rwx-hq82-h65h.