CVE-2025-29895 NULL Pointer Dereference in qsyncsrv.cgi
Authenticated remote attackers can cause a denial of service in QNAP Qsync Central via a NULL pointer dereference in qsyncsrv.cgi.
- 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-2025-29895?
CVE-2025-29895 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-2025-29895?
How do I fix CVE-2025-29895?
No fix has been published for CVE-2025-29895 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-29895 being exploited?
There is no known exploitation of CVE-2025-29895 in the wild and no public exploit code.
Sources
Also known as GHSA-f2q9-2vg4-vw84.