CVE-2026-26335-Calero-VeraSMART-RCE

👤 Author Mohammed Idrees Banyamer Security Researcher GitHub: https://github.com/mbanyamer Instagram: https://instagram.com/banyamersecurity CVE-2026-26335 - Calero VeraSMART ViewState RCE Exploit 📌 Description CVE‑2026‑26335 is a critical unauthenticated remote code execution vulnerability in...

CVE-2026-26335

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...

Exploit for CVE-2026-26335

👤 Author Mohammed Idrees Banyamer Security Researcher...

CVE-2026-26335

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...

CVE-2026-26335

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...

CVE-2026-26334

Affected software: Calero VeraSMART (versions prior to 2026 R1). Vulnerability: Hardcoded static AES keys present within Veramark.Framework.dll (Veramark.Core.Config class) are used to encrypt the password of the service account stored in C:\VeraSMART Data\app.settings. Impact chain: An attacker ...

CVE-2026-26334 Calero VeraSMART < 2026 R1 Hardcoded Static AES Keys Allow Decryption of Service Credentials

Calero VeraSMART versions prior to 2026 R1 contain hardcoded static AES encryption keys within Veramark.Framework.dll Veramark.Core.Config class. These keys are used to encrypt the password of the service account stored in C:\VeraSMART Data\app.settings. An attacker with local access to the...

CVE-2026-26333 Calero VeraSMART < 2022 R1 .NET Remoting Arbitrary File Read Leading to ViewState RCE

Calero VeraSMART versions prior to 2022 R1 expose an unauthenticated .NET Remoting HTTP service on TCP port 8001. The service publishes default ObjectURIs including EndeavorServer.rem and RemoteFileReceiver.rem and permits the use of SOAP and binary formatters with TypeFilterLevel set to Full. An...

CVE-2026-26333

The CVE describes an unauthenticated .NET Remoting HTTP service on TCP port 8001 in VeraSMART versions prior to 2022 R1. It exposes default ObjectURIs (e.g., EndeavorServer.rem, RemoteFileReceiver.rem) and allows SOAP/binary formatters with TypeFilterLevel set to Full. An unauthenticated attacker...

CVE-2026-26333 Calero VeraSMART < 2022 R1 .NET Remoting Arbitrary File Read Leading to ViewState RCE

Calero VeraSMART versions prior to 2022 R1 expose an unauthenticated .NET Remoting HTTP service on TCP port 8001. The service publishes default ObjectURIs including EndeavorServer.rem and RemoteFileReceiver.rem and permits the use of SOAP and binary formatters with TypeFilterLevel set to Full. An...

CVE-2026-26335 Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE

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...

CVE-2026-26335 Calero VeraSMART < 2022 R1 Static IIS Machine Keys Enable ViewState RCE

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...

CVE-2026-26335

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...

CVE-2026-26335

CVE-2026-26335 affects Calero VeraSMART web applications running on IIS where VeraSMART versions prior to 2022 R1 store static machineKey values in web.config. The static keys allow an attacker to craft a valid ASP.NET ViewState payload, bypassing integrity checks and enabling server-side deseria...

Calero VeraSMART code issue vulnerabilities

Calero VeraSMART is a telephone billing software developed by the American company Calero. Versions of Calero VeraSMART prior to 2022 R1 contained code vulnerabilities. These vulnerabilities stemmed from exposing an unauthenticated .NET Remoting HTTP service, which could allow arbitrary file...

Calero VeraSMART Trust Management Vulnerability

Calero VeraSMART is a telephone billing software developed by the American company Calero. Versions of Calero VeraSMART prior to 2026 R1 contained a trust management vulnerability. This vulnerability stemmed from the hardcoded static AES encryption key contained in the Veramark.Framework.dll, whi...

Calero VeraSMART security vulnerabilities

Calero VeraSMART is a telephone billing software developed by the American company Calero. Versions of Calero VeraSMART prior to 2022 R1 contained security vulnerabilities. These vulnerabilities stemmed from the use of static ASP.NET/IIS machineKey values, which could allow attackers to construct...

CVE-2026-26335: Use of Hard-coded Cryptographic Key

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...

CVE-2026-26334: Use of Hard-coded Credentials

Calero VeraSMART versions prior to 2026 R1 contain hardcoded static AES encryption keys within Veramark.Framework.dll Veramark.Core.Config class. These keys are used to encrypt the password of the service account stored in C:\VeraSMART Data\app.settings. An attacker with local access to the...

CVE-2026-26333: Missing Authentication for Critical Function

Calero VeraSMART versions prior to 2022 R1 expose an unauthenticated .NET Remoting HTTP service on TCP port 8001. The service publishes default ObjectURIs including EndeavorServer.rem and RemoteFileReceiver.rem and permits the use of SOAP and binary formatters with TypeFilterLevel set to Full. An...