What is CVE-2025-59388?

CVE-2025-59388 is a critical-severity vulnerability in Qnap Hyper Data Protector, classified under Use of Hard-coded Password. CVSS score: 9.8/10. Published 2026-03-12.

How severe is CVE-2025-59388?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Qnap Hyper Data Protector

CVE-2025-59388

A use of hard-coded password vulnerability has been reported to affect Hyper Data Protector. The remote attackers can then exploit the vulnerability to gain unauthorized access. We have already fixed the vulnerability in the following version: Hyper Data Protector 2.3.1.455 and later

EPSS: 0.005 (38.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Qnap Hyper_data_protector
Qnap Systems Inc. Hyper Data Protector — versions 2.3.x

Weakness classification (CWE)

CWE-259 — Use of Hard-coded Password

References

security@qnapsecurity.com.tw (Vendor Advisory)

Frequently asked questions

What is CVE-2025-59388?: CVE-2025-59388 is a critical-severity vulnerability in Qnap Hyper Data Protector, classified under Use of Hard-coded Password. CVSS score: 9.8/10. Published 2026-03-12.
How severe is CVE-2025-59388?: Critical severity. CVSS v3 base score is 9.8 out of 10.