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I. Basic Information for CVE-2025-34256
Vulnerability Information

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Vulnerability Title
Advantech WISE-DeviceOn Server < 5.4 Hard-coded JWT Key Authentication Bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Advantech WISE-DeviceOn Server versions prior to 5.4 contain a hard-coded cryptographic key vulnerability. The product uses a static HS512 HMAC secret for signing EIRMMToken JWTs across all installations. The server accepts forged JWTs that need only contain a valid email claim, allowing a remote unauthenticated attacker to generate arbitrary tokens and impersonate any DeviceOn account, including the root super admin. Successful exploitation permits full administrative control of the DeviceOn instance and can be leveraged to execute code on managed agents through DeviceOn’s remote management features.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用硬编码的密码学密钥
Source: NVD (National Vulnerability Database)
Vulnerability Title
Advantech WISE-DeviceOn Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Advantech WISE-DeviceOn Server是中国台湾研华(Advantech)公司的一个物联网设备管理平台软件。 Advantech WISE-DeviceOn Server 5.4之前版本存在安全漏洞,该漏洞源于使用硬编码加密密钥,可能导致远程攻击者冒充任意账户。
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
Advantech Co., Ltd.WISE-DeviceOn Server 0 ~ 5.4.0 -
II. Public POCs for CVE-2025-34256
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III. Intelligence Information for CVE-2025-34256
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