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
- Published Apr 16, 2026
- CVSS 9.1 critical
- 0.8% chance of exploitation in the next 30 days (EPSS)
Affected software
In the news
- Exploitation of KnowledgeDeliver via ViewState Deserialization Vulnerability Google Threat Intelligence ·