CVE-2026-88771: Inside the Exploitation of a Critical NetScaler RCE Vulnerability

Reported by Zscaler ThreatLabz (Sai Nikhil Perla (Threat Researcher))

Summary by Cyber Security News16 Oct 2026, 23:28 CET

About this summary. This is a short excerpt from the description that Zscaler ThreatLabz published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://www.zscaler.com/blogs/security-research/cve-2026-88771-inside-exploitation-critical-netscaler-rce-vulnerability

IntroductionOn September 27, 2026, Citrix disclosed CVE-2026-88771, a critical remote code execution (RCE) vulnerability affecting NetScaler Application Delivery Controller (ADC) and NetScaler Gateway. The vulnerability carries a CVSS v3.1 score of 9.8 according to NVD and a CVSS v4.0 score of 9.5 according to the Citrix security bulletin CTX697096. The vulnerability allows unauthenticated attackers to execute arbitrary commands on affected appliances.

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