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Technology · Cybersecurity · published 2026-09-27 · via The Hacker News

Attackers Exploit Unpatched Citrix NetScaler Flaws for Remote Code Execution

Image via The Hacker News
Image via The Hacker News

Security researchers at watchTowr reported on September 26 that attackers are exploiting two previously unknown flaws in Citrix NetScaler ADC and Gateway. The vulnerabilities permit remote code execution, and Citrix has not yet acknowledged them or released patches. Some administrators have disconnected affected appliances while awaiting a fix.

Expanded Detail

On September 26, watchTowr researchers reported that two previously unidentified flaws in Citrix NetScaler ADC and Gateway are being exploited in attacks. These vulnerabilities permit remote code execution.

No acknowledgment or patch has come from Citrix. Some administrators have taken affected appliances offline until a remedy is available, leaving the situation unresolved.

Context

Organizations using Citrix NetScaler ADC and Gateway could face disruption, along with administrators and people who depend on services behind those appliances. If exploitation continues without patches, systems may be at greater risk, and taking devices offline could interrupt access. The episode may also heighten scrutiny of how quickly vendors address serious security flaws.

Expanded detail and Context are AI-generated analysis; the linked article remains the authoritative source.
Read the full article at The Hacker News →
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This summary is Al-enhanced to contain extended analysis and broader social context. The original is {NAME); the linked article is the authoritative source. Original headline: “Warning: Two Unpatched Citrix NetScaler RCE Zero-Days Under Active Exploitation.” Browse more stories.