CVE-2026-26335: CWE-321 Use of Hard-coded Cryptographic Key in Calero VeraSMART
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.
AI Analysis
Technical Summary
CVE-2026-26335 describes a vulnerability in Calero VeraSMART versions before 2022 R1 where static ASP.NET/IIS machineKey values are hard-coded and stored in the web.config file. An attacker who obtains these keys can create a malicious ViewState payload that bypasses integrity validation, resulting in server-side deserialization and remote code execution on the IIS server hosting the VeraSMART web application. This vulnerability is classified under CWE-321 (Use of Hard-coded Cryptographic Key) and has a critical impact rating.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the server running the VeraSMART application. This compromises the confidentiality, integrity, and availability of the affected system, potentially leading to full system compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the web.config file to prevent unauthorized disclosure of the machineKey. Monitor for updates from Calero regarding patches or configuration changes to mitigate this vulnerability.
CVE-2026-26335: CWE-321 Use of Hard-coded Cryptographic Key in Calero VeraSMART
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.
CVSS v4.0
Score 9.3critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-26335 describes a vulnerability in Calero VeraSMART versions before 2022 R1 where static ASP.NET/IIS machineKey values are hard-coded and stored in the web.config file. An attacker who obtains these keys can create a malicious ViewState payload that bypasses integrity validation, resulting in server-side deserialization and remote code execution on the IIS server hosting the VeraSMART web application. This vulnerability is classified under CWE-321 (Use of Hard-coded Cryptographic Key) and has a critical impact rating.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the server running the VeraSMART application. This compromises the confidentiality, integrity, and availability of the affected system, potentially leading to full system compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the web.config file to prevent unauthorized disclosure of the machineKey. Monitor for updates from Calero regarding patches or configuration changes to mitigate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-02-13T17:28:43.052Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 698f9c59c9e1ff5ad86a8ee7
Added to database: 02/13/2026, 21:49:13 UTC
Last enriched: 07/15/2026, 11:10:14 UTC
Last updated: 08/24/2026, 22:52:10 UTC
Views: 654
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