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Needs attention

Active incidents, new guidance or unresolved scope that security teams should review now.

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Patch

Citrix NetScaler command execution

CVE-2026-88771

An unauthenticated attacker can execute commands on affected NetScaler ADC and Gateway appliances, including default configurations.

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Why this needs attention

Citrix reports exploitation on unmitigated deployments, and the affected gateway can be compromised before sign-in. Every customer-managed NetScaler ADC or Gateway appliance, including default configurations, needs prompt review.

What to do now

Use Citrix's bulletin to identify and update affected appliances. Treat suspected compromise separately from patching, and review exposed gateway services and incident-response guidance.