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I. Basic Information for CVE-2026-4346
Vulnerability Information

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Vulnerability Title
Cleartext Storage of Administrative and Wi-Fi Credentials via Accessible Serial Interface in TP Link's TL-WR850N
Source: NVD (National Vulnerability Database)
Vulnerability Description
The vulnerability affecting TL-WR850N v3 allows cleartext storage of administrative and Wi-Fi credentials in a region of the device’s flash memory while the serial interface remains enabled and protected by weak authentication. An attacker with physical access and the ability to connect to the serial port can recover sensitive information, including the router’s management password and wireless network key. Successful exploitation can lead to full administrative control of the device and unauthorized access to the associated wireless network.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
敏感数据的明文存储
Source: NVD (National Vulnerability Database)
Vulnerability Title
TP-Link TL-WR850N 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link TL-WR850N是中国普联(TP-Link)公司的一个WiFi路由器。 TP-Link TL-WR850N v3存在安全漏洞,该漏洞源于在串行接口启用且受弱身份验证保护的情况下,设备闪存中明文存储管理和Wi-Fi凭据,可能导致具有物理访问权限的攻击者恢复敏感信息并获得设备的完全管理控制权。
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
VendorProductAffected VersionsCPESubscribe
TP-Link Systems Inc.TL-WR850N v3 0 ~ V3_0.9.1 Build251205 -
II. Public POCs for CVE-2026-4346
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III. Intelligence Information for CVE-2026-4346
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IV. Related Vulnerabilities
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