CVE-2025-29896 NULL Pointer Dereference in qsyncsrv.cgi
A remote attacker with a user account can cause a denial of service in QNAP Qsync Central via a NULL pointer dereference.
- 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-2025-29896?
CVE-2025-29896 is a low-severity vulnerability in QNAP Systems Inc. Qsync Central, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A NULL pointer dereference vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack.
We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 and later
Weakness: CWE-476
Which versions are affected by CVE-2025-29896?
How do I fix CVE-2025-29896?
No fix has been published for CVE-2025-29896 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-29896 being exploited?
There is no known exploitation of CVE-2025-29896 in the wild and no public exploit code.
Sources
Also known as GHSA-p2j4-rcc2-w382.