What is CVE-2025-59386?

CVE-2025-59386 is a medium-severity vulnerability in Qnap Quts_hero, classified under NULL Pointer Dereference. CVSS score: 4.9/10. Published 2026-02-11.

How severe is CVE-2025-59386?

Medium severity. CVSS v3 base score is 4.9 out of 10.

NULL pointer dereference in Qnap Quts_hero

CVE-2025-59386

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) a…

EPSS: 0.004 (28.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Qnap Quts_hero — versions h5.3.0.3115, h5.3.0.3145, h5.3.0.3192
Qnap Systems Inc. Quts Hero — versions h5.3.x

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security@qnapsecurity.com.tw (Vendor Advisory)

Frequently asked questions

What is CVE-2025-59386?: CVE-2025-59386 is a medium-severity vulnerability in Qnap Quts_hero, classified under NULL Pointer Dereference. CVSS score: 4.9/10. Published 2026-02-11.
How severe is CVE-2025-59386?: Medium severity. CVSS v3 base score is 4.9 out of 10.