Security Roundup: Cisco ISE Critical CVSS 10.0 Zero-Day Under Active Attack, VMware Escape, and Acronis in CISA KEV (Week of September 18, 2026)
Executive threat intelligence briefing: Cisco ISE CVSS 10.0 zero-day (CVE-2026-76460), VMware hypervisor escape (VMSA-2026-0007), and Acronis in CISA KEV.
From Cisco ISE's maximum-severity CVSS 10.0 zero-day under active exploitation and VMware's virtual machine escape advisory (VMSA-2026-0007) to Acronis backup tampering in CISA KEV and Palo Alto Networks agent updates: here is your executive cybersecurity threat intelligence briefing for the week of September 18, 2026.
1. Cisco ISE: CVSS 10.0 Zero-Day RCE Under Active Exploitation (CVE-2026-76460)
Unauthenticated remote adversaries can bypass authentication and execute root commands on enterprise NAC appliances.
→ Read Full Technical Deep Dive: Cisco ISE Zero-Day
2. VMware Workstation & Fusion: Hypervisor Escape (VMSA-2026-0007)
Virtual device emulation flaws allow guest virtual machines to escape isolation boundaries and compromise the host OS.
→ Read Full Technical Deep Dive: VMware Hypervisor Escape
3. Acronis Cyber Protect: Backup LPE Added to CISA KEV (CVE-2026-87886)
Ransomware operators exploit backup agent privileges to delete shadow copies and prevent enterprise recovery.
→ Read Full Technical Deep Dive: Acronis Backup Flaw
4. Palo Alto Networks: GlobalProtect & Prisma Access Advisories
Security updates address local privilege escalation and data loss prevention bypasses on endpoint agents.
→ Read Full Analysis: Palo Alto Security Wave
5. Enterprise Zero-Trust Defense: Hardening NAC & Virtualization Perimeters
Strategic hardening guide for securing network admission controllers and hypervisor host environments.
