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I. Basic Information for CVE-2021-4461
Vulnerability Information

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Vulnerability Title
Seeyon Zhiyuan OA Web Application System < 7.0 SP1 Authentication Bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Seeyon Zhiyuan OA Web Application System versions up to and including 7.0 SP1 improperly decode and parse the `enc` parameter in thirdpartyController.do. The decoded map values can influence session attributes without sufficient authentication/authorization checks, enabling attackers to assign a session to arbitrary user IDs. VulnCheck has observed this vulnerability being exploited in the wild as of 2025-10-30 at 00:30:40.855917 UTC.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Seeyon Zhiyuan OA Web Application System 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Seeyon Zhiyuan OA Web Application System是中国致远(Seeyon)公司的一款综合办公自动化平台。 Seeyon Zhiyuan OA Web Application System 7.0 SP1及之前版本存在安全漏洞,该漏洞源于对thirdpartyController.do中参数enc解码和解析不当,可能导致攻击者分配任意用户ID会话。
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
SeeyonZhiyuan OA Web Application System 0 ~ 7.0 SP1 -
II. Public POCs for CVE-2021-4461
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III. Intelligence Information for CVE-2021-4461
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