CVE-2026-88772

HighActively exploited (CISA KEV)

Description

Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to Remote Code Execution or Denial of Service

SeverityHigh
CVSS8.1
Exploit probability—
ProductCitrix NetScaler
PublishedSep 27, 2026
First seenSep 27, 2026
Added to KEVSep 27, 2026

How to fix

CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA due date: Sep 30, 2026
Update
  • citrix netscaler_application_delivery_controller13.1-64.23, 13.1.37.279, 14.1-73.37 or later
  • citrix netscaler_gateway13.1-64.23, 14.1-73.37 or later

Affected products

ProductAffected versionsFixed in
citrix netscaler_application_delivery_controller13.1 ≤ v < 13.1-64.23, 13.1 ≤ v < 13.1.37.279, 14.1 ≤ v < 14.1-73.37, 14.1-66.68 ≤ v ≤ 14.1-73.3713.1-64.23, 13.1.37.279, 14.1-73.37
citrix netscaler_gateway13.1 ≤ v < 13.1-64.23, 14.1 ≤ v < 14.1-73.3713.1-64.23, 14.1-73.37

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CVE-2026-88772 · Citrix NetScaler · Dark Radar