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CISA ORDERS FEDS TO PATCH CITRIX NETSCALER RCE BY SATURDAY

SECURITY DESK1 MIN READ
THU, AUG 27, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

The U.S. Cybersecurity and Infrastructure Security Agency has issued a mandate requiring all federal agencies to patch an actively exploited remote code execution vulnerability in Citrix NetScaler appliances by Saturday.

The vulnerability allows attackers to execute arbitrary code on unpatched NetScaler instances without authentication. CISA's emergency directive reflects the severity of the threat and the fact that the flaw is already being weaponized in the wild. Citrix NetScaler is widely deployed across government agencies and critical infrastructure operators for load balancing and application delivery. The RCE flaw poses significant risk to federal systems and sensitive data. Federal agencies must apply Citrix's security patches immediately to comply with the order. Organizations running NetScaler in non-federal environments should prioritize patching as well, as the vulnerability's active exploitation makes it a priority target for threat actors. CISA's accelerated timeline underscores the urgency. Agencies failing to patch by the deadline face potential compliance violations and increased exposure to compromise.

■ SOURCES

Bleeping Computer

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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