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July 2026 saw 26 new entries added to CISA's Known Exploited Vulnerabilities (KEV) catalog, dominated by targeting of enterprise collaboration platforms, edge network infrastructure, and web content management systems. Threat actors demonstrated a concentrated focus on management planes (Arista VCO, Cisco FMC) and enterprise application backbones (Microsoft SharePoint, Oracle EBS), utilizing deserialization, hardcoded authentication bypasses, and OS command injection to bypass traditional perimeter security controls. Security operations, vulnerability management leads, and infrastructure administrators must use this intelligence-led priority assessment to cut through raw CVSS noise and execute targeted remediation across high-exposure assets.

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CVSS assigns severity scores to vulnerabilities based on theoretical impact. EPSS predicts which vulnerabilities adversaries will actually exploit within 30 days. Security teams managing 41,000+ annual CVEs with 56% scored High or Critical face a prioritization crisis where traditional scoring fails operational reality.

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The June 2026 HackerStorm report covers all 23 CISA KEV additions this month, active exploitation trends, and prioritisation guidance.

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Traditional CVSS triage and monthly patch cycles can't keep pace with modern exploitation timelines. Learn how to operationalise CISA KEV with a tiered decision framework, emergency workflows, and clear escalation paths that prioritise the 0.48% of vulnerabilities driving real-world breaches.

Reading time 10 minutes