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I. Basic Information for CVE-2026-26335
Vulnerability Information

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Vulnerability Title
Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE
Source: NVD (National Vulnerability Database)
Vulnerability Description
Calero VeraSMART versions prior to 2022 R1 use static ASP.NET/IIS machineKey values configured for the VeraSMART web application and stored in C:\\Program Files (x86)\\Veramark\\VeraSMART\\WebRoot\\web.config. An attacker who obtains these keys can craft a valid ASP.NET ViewState payload that passes integrity validation and is accepted by the application, resulting in server-side deserialization and remote code execution in the context of the IIS application.
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
Calero VeraSMART 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Calero VeraSMART是美国Calero公司的一个电话计费软件。 Calero VeraSMART 2022 R1之前版本存在安全漏洞,该漏洞源于使用静态的ASP.NET/IIS machineKey值,可能导致攻击者构造有效的ASP.NET ViewState有效载荷,进而导致服务器端反序列化和远程代码执行。
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
CaleroVeraSMART 0 ~ 2022 R1 -
II. Public POCs for CVE-2026-26335
#POC DescriptionSource LinkShenlong Link
1Nonehttps://github.com/mbanyamer/CVE-2026-26335-Calero-VeraSMART-RCEPOC Details
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III. Intelligence Information for CVE-2026-26335
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IV. Related Vulnerabilities
V. Comments for CVE-2026-26335

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