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I. Basic Information for CVE-2025-34491
Vulnerability Information

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Vulnerability Title
GFI MailEssentials < 21.8 MultiNode Insecure Deserialization
Source: NVD (National Vulnerability Database)
Vulnerability Description
GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
GFI MailEssentials 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GFI MailEssentials是GFI公司的一款电子邮件安全套装,包含 14 个反垃圾邮件过滤器、3 个防病毒引擎以及恶意软件扫描功能。 GFI MailEssentials 21.8之前版本存在安全漏洞,该漏洞源于.NET反序列化处理不当,可能导致执行任意代码。
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
GFIMailEssentials 0 ~ 21.8 -
II. Public POCs for CVE-2025-34491
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III. Intelligence Information for CVE-2025-34491
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IV. Related Vulnerabilities
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