Amazon Uncovers Attacks Exploited Cisco ISE and Citrix NetScaler as Zero

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Amazon Uncovers Attacks Exploited Cisco ISE and Citrix NetScaler as Zero

Thehackernews •[email protected] (The Hacker News) • November 12, 2025

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Amazon Reports Exploitation of Cisco ISE and Citrix NetScaler Zero-Days Amazon has identified an advanced threat actor exploiting zero-day vulnerabilities in Cisco Identity Service Engine (ISE) and Citrix NetScaler. The attackers deployed custom malware utilizing these previously undisclosed flaws, alongside multiple other vulnerabilities. This incident highlights significant risks to organizations using these technologies. 2 sources 20

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Vulnerabilities (1)

Citrix NetScaler