Two Citrix NetScaler zero-day flaws exploited before patch

Two unpatched zero-day vulnerabilities affect Citrix NetScaler ADC and Gateway.

Published 6sem10 sources✓ ConfirmedMajorupdated 6sem

≈ 16sSpeed

The fact

Security firm watchTowr confirms active exploitation since September 26.

Citrix has not yet released a patch, prompting some administrators to disable appliances.

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Auto-synthesis from 10 media sources · identified on September 27, 2026