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CVE-2025-66274— QTS, QuTS hero

Quick assessment

Affected
QNAP Systems Inc. QTS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

QNAP Systems QuTS hero是中国台湾威联通科技（QNAP Systems）公司的一个具有数据存储与管理功能的软件。 QNAP Systems QuTS hero h5.3.2.3354之前版本存在代码问题漏洞，该漏洞源于存在空指针取消引用，可能导致远程攻击者发起拒绝服务攻击。

AI Predicted 5.5 Difficulty: Easy EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
QNAP Systems Inc. QTS 5.2.0< 5.2.9.3410 build 20260214 affected
QNAP Systems Inc. QuTS hero h5.2.0< h5.2.9.3410 build 20260214 affected
h5.3.0< h5.3.2.3354 build 20251225 affected
?< h6.0.0.3397 build 20260206 affected
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I. Basic Information for CVE-2025-66274

Vulnerability Information
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Vulnerability Title
QTS, QuTS hero
Source: CVE Program / CVE List V5
Vulnerability Description
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: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.2.3354 build 20251225 and later QuTS hero h6.0.0.3397 build 20260206 and later
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
QNAP Systems QuTS hero 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QNAP Systems QuTS hero是中国台湾威联通科技（QNAP Systems）公司的一个具有数据存储与管理功能的软件。 QNAP Systems QuTS hero h5.3.2.3354之前版本存在代码问题漏洞，该漏洞源于存在空指针取消引用，可能导致远程攻击者发起拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
QNAP Systems Inc. QTS 5.2.0 ~ 5.2.9.3410 build 20260214 -
QNAP Systems Inc. QuTS hero h5.2.0 ~ h5.2.9.3410 build 20260214 -

II. Public POCs for CVE-2025-66274

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III. Intelligence Information for CVE-2025-66274

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Same Patch Batch · QNAP Systems Inc. · 2026-02-11 · 49 CVEs total

CVE-2025-58466 QTS, QuTS hero
CVE-2025-58471 Qsync Central
CVE-2025-59386 QuTS hero
CVE-2025-62856 File Station 5
CVE-2025-66277 QTS, QuTS hero
CVE-2025-66278 File Station 5
CVE-2025-68406 Qsync Central
CVE-2026-22894 File Station 5
CVE-2025-62855 File Station 5
CVE-2025-58467 Qsync Central
CVE-2025-58470 Qsync Central
CVE-2025-57713 File Station 5
CVE-2025-57711 Qsync Central
CVE-2025-57710 Qsync Central
CVE-2025-57709 Qsync Central
CVE-2025-57708 Qsync Central
CVE-2025-57707 File Station 5
CVE-2025-54170 Qsync Central
CVE-2025-54169 File Station 5
CVE-2025-54163 File Station 5

Showing top 20 of 49 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: QTS
Same vendor: QNAP Systems Inc.
Same weakness: CWE-476

V. Comments for CVE-2025-66274

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