CISA Expands KEV Catalog: Six Critical Vulnerabilities Under Active Exploitation
On August 26, 2026, CISA added six actively exploited vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, spanning from 2015 to 2026. The vulnerabilities affect critical infrastructure components including Red Hat Libuser, Microsoft SQL Server, Linux Kernel, Ajax.NET Professional, and Citrix NetScaler ADC/Gateway systems. These CVEs enable race condition exploits, privilege escalation, remote code execution, deserialization attacks, memory corruption, and buffer overflow exploits that grant attackers total system control. This advisory reinforces the urgency of risk-based vulnerability management as federal agencies face increased scrutiny under BOD 26-04, which mandates rapid remediation of KEV-listed vulnerabilities on publicly exposed assets while establishing breach assessment requirements for delayed patching.
Kill Chain

