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CVE-2026-22899— File Station 5

Quick assessment

Affected
QNAP Systems Inc. File Station 5
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 File Station 6是中国台湾威联通科技（QNAP Systems）公司的一个文件管理软件。 QNAP Systems File Station 6存在代码问题漏洞，该漏洞源于空指针取消引用，可能导致远程攻击者在获取用户账户后发起拒绝服务攻击。以下版本受到影响：File Station 5 5.5.6.5208之前版本。

AI Predicted 4.0 Difficulty: Easy EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
QNAP Systems Inc. File Station 5 5.5.0< 5.5.6.5208 affected
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I. Basic Information for CVE-2026-22899

Vulnerability Information
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Vulnerability Title
File Station 5
Source: CVE Program / CVE List V5
Vulnerability Description
A NULL pointer dereference vulnerability has been reported to affect File Station 6. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5208 and later
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
QNAP Systems File Station 6 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QNAP Systems File Station 6是中国台湾威联通科技（QNAP Systems）公司的一个文件管理软件。 QNAP Systems File Station 6存在代码问题漏洞，该漏洞源于空指针取消引用，可能导致远程攻击者在获取用户账户后发起拒绝服务攻击。以下版本受到影响：File Station 5 5.5.6.5208之前版本。
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. File Station 5 5.5.0 ~ 5.5.6.5208 -

II. Public POCs for CVE-2026-22899

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-22899

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Vendor Advisories for CVE-2026-22899 (2)

Same Patch Batch · QNAP Systems Inc. · 2026-06-10 · 20 CVEs total

CVE-2026-22893 QTS, QuTS hero
CVE-2025-66276 QTS
CVE-2025-59382 QTS, QuTS hero, QuTScloud, QVP (QVR Pro appliances)
CVE-2025-58468 Notification Center
CVE-2025-62850 QuTS hero
CVE-2025-62851 License Center
CVE-2025-66273 QTS, QuTS hero
CVE-2025-66279 QTS, QuTS hero
CVE-2025-66280 QTS, QuTS hero
CVE-2025-66281 QTS, QuTS hero
CVE-2026-26240 File Station 5
CVE-2026-24720 File Station 5
CVE-2026-24716 QTS, QuTS hero
CVE-2026-24717 QTS, QuTS hero
CVE-2026-24719 QTS, QuTS hero
CVE-2026-26237 QuMagie
CVE-2026-26239 File Station 5
CVE-2026-24724 File Station 5
CVE-2026-26241 File Station 5

IV. Related Vulnerabilities

Same product: File Station 5
Same vendor: QNAP Systems Inc.
Same weakness: CWE-476

V. Comments for CVE-2026-22899

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