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Threat Intelligence Report

Inside the NetScaler Zero-Day Siege: Chained Pre-Auth RCEs Weaponized in the Wild (watchTowr Disclosure)

๐Ÿ“… September 28, 2026 ๐Ÿ“ฐ sh3llc0d3.com ๐Ÿ” 1 CVE(s) referenced

Attackers are actively chaining two unpatched Citrix NetScaler pre-authentication RCE zero-days to seize internet-facing gateways, steal VPN sessions and credentials, and establish persistent access, demanding immediate isolation and threat hunting.

unclassified
CVE-2026-19490

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