Hackers Abuse KnowledgeDeliver LMS Flaw to Install BLUEBEAM Web Shell
Source: Gbhackers
Published:
<p>Hackers are actively exploiting a critical vulnerability in the KnowledgeDeliver Learning Management System (LMS) to deploy the BLUEBEAM web shell, according to findings from Mandiant’s Google Threat Intelligence Group. The flaw, tracked as CVE-2026-5426, enables unauthenticated remote code execu