What is CVE-2025-47209?

CVE-2025-47209 is a medium-severity vulnerability in Qnap Qsync_central, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-02-11.

How severe is CVE-2025-47209?

Medium severity. CVSS v3 base score is 6.5 out of 10.

NULL pointer dereference in Qnap Qsync_central

CVE-2025-47209

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 v…

EPSS: 0.004 (30.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Qnap Qsync_central
Qnap Systems Inc. Qsync Central — versions 5.0.x.x

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security@qnapsecurity.com.tw (Vendor Advisory)

Frequently asked questions

What is CVE-2025-47209?: CVE-2025-47209 is a medium-severity vulnerability in Qnap Qsync_central, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-02-11.
How severe is CVE-2025-47209?: Medium severity. CVSS v3 base score is 6.5 out of 10.