We’re taking on a small number of new builds and rebuilds this quarter. Book a call to see if your project is a fit.

CVE CVE-2026-26335

CVE-2026-26335

ASP.NET

Severity: CRITICAL
CVSS: 9.8CVSS
Published: 2026-02-13
Last modified: 2026-02-26
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-321

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.

References

https://www.calero.com/
https://www.vulncheck.com/advisories/calero-verasmart-2022-r1-static-iis-machine-keys-enable-viewstate-rce

Summary

Description

References