CISA ransomware flag turns vCenter patching into incident triage
CISA’s ransomware designation for CVE-2026-59310 changes the VMware vCenter response from emergency patching alone to control-plane compromise assessment and recovery validation.
Security.io Intelligence Desk · Wednesday, 16 September 2026
Executive consequence
CISA has marked VMware vCenter vulnerability CVE-2026-59310 as used in ransomware campaigns. Broadcom patched the unauthenticated vCenter Syslog server code-execution flaw on July 29, 2026, but the ransomware update means enterprises can no longer close the issue with patch status alone.
Decision today
Inventory every vCenter instance, fixed release, owner and management-network exposure.
Read the full decision briefPrimary reporting: CISA Known Exploited Vulnerabilities Catalog · Broadcom VMware Security Advisory · BleepingComputer
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Do today
Identify every physical, virtual and cloud-managed Cisco Secure Email Gateway instance.
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