CVE-2025-54166 MEDIUM

CVE-2025-54166: QTS, QuTS hero

Vendor Qnap Systems Inc.
Product QTS
Weakness CWE-125
Published January 2, 2026
Last update January 2, 2026

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U

What the vulnerability does

01Description

An out-of-bounds read 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 obtain secret data. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later

Key dates

02Disclosure timeline

January 2, 2026 CVE published
January 2, 2026 Record updated

Related vulnerabilities

04Related CVE