CVE-2026-26240— File Station 5
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| QNAP Systems Inc. | File Station 5 | 5.5.0< 5.5.6.5243 | affected |
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I. Basic Information for CVE-2026-26240
Vulnerability Information
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Vulnerability Title
File Station 5
Source: NVD (National Vulnerability Database)
Vulnerability Description
A buffer overflow vulnerability has been reported to affect File Station 5. The remote attackers can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5243 and later
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
QNAP Systems File Station 5 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QNAP Systems File Station 5是中国台湾威联通科技（QNAP Systems）公司的一个文件管理系统。 QNAP Systems File Station 5存在安全漏洞，该漏洞源于缓冲区溢出，可能导致远程攻击者修改内存或使进程崩溃。
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 ~ 5.5.6.5243 | - |
II. Public POCs for CVE-2026-26240
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Vendor Advisories for CVE-2026-26240 (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-2026-26241 | File Station 5 | |
| CVE-2026-22899 | 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 |
IV. Related Vulnerabilities
Same weakness: CWE-121
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Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToo - CVE-2026-12221
Yealink SIP-T46U Firmware Chunk Upload upgrade sprintf stack - CVE-2026-12220
Yealink SIP-T46U Firmware Chunk Upload handler accupgradebyc
V. Comments for CVE-2026-26240
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