KnowledgeDeliver LMS Flaw Exploited to Deploy Godzilla and Cobalt Strike

A now-patched high-severity security flaw affecting Digital Knowledge KnowledgeDeliver, a Learning Management System LMS popular in Japan, was exploited as a zero-day to deliver the Godzilla web shell and ultimately facilitate the deployment of Cobalt Strike Beacon. The vulnerability, tracked as...

CVE-2026-5426 KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value

Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks...

CVE-2026-5426

Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks...

CVE-2026-5426 KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value

Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks...

CVE-2026-5426

CVE-2026-5426 affects Digital Knowledge KnowledgeDeliver prior to Feb 24, 2026, due to a hard-coded ASP.NET/IIS machineKey in web.config. This flaw enables unauthenticated attackers to bypass ViewState validation and achieve remote code execution via crafted ViewState deserialization. In observed...

Digital Knowledge KnowledgeDeliver 安全漏洞

Digital Knowledge KnowledgeDeliver is an online learning management system developed by Digital Knowledge Company. Versions of Digital Knowledge KnowledgeDeliver prior to February 24, 2026, contained security vulnerabilities. These vulnerabilities stemmed from hard-coded ASP.NET/IIS machineKey...