Critical severity9.8NVD Advisory· Published Feb 13, 2026· Updated Jun 17, 2026
CVE-2026-26335
CVE-2026-26335
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.
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Affected products
5- Range: <2022 R1
Patches
Vulnerability mechanics
References
2- www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rcenvdThird Party Advisory
- www.calero.comnvdProduct
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