NULL pointer dereference in QNAP Quts Hero
CVE-2025-62850
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build 20260409 and later
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- QNAP Quts Hero
- QNAP Systems Inc. Quts Hero — versions h5.2.0, h5.3.0
Weakness classification (CWE)
References
- www.qnap.com/en/security-advisory/qsa-26-38 (Broken Link)
Frequently asked questions
- What is CVE-2025-62850?
- CVE-2025-62850 is a high-severity vulnerability in QNAP Quts Hero, classified under NULL Pointer Dereference. CVSS score: 7.2/10. Published 2026-06-10.
- How severe is CVE-2025-62850?
- High severity. CVSS v3 base score is 7.2 out of 10.