Detections
Analytics

NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX696604)

critical Nessus Plugin ID 324949

Synopsis

The remote device is affected by multiple vulnerabilities.

Description

The remote NetScaler ADC (formerly Citrix ADC) or NetScaler Gateway (formerly Citrix Gateway) device is version 13.1 prior to 13.1-63.18, 14.1 prior to 14.1-72.61, 13.1-FIPS/NDcPP prior to 13.1-37.272, or 14.1-FIPS prior to 14.1-72.61. It is, therefore, affected by multiple vulnerabilities:

 - Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP. (CVE-2026-8451)

 - Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. (CVE-2026-8452)

 - Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive resolver deployment. (CVE-2026-8655)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to NetScaler ADC or NetScaler Gateway version 13.1-63.18, 14.1-72.61, 13.1-37.272-FIPS, 13.1-37.272-NDcPP, or 14.1-72.61-FIPS or later.

See Also

http://www.nessus.org/u?83a02083

Plugin Details

Severity: Critical

ID: 324949

File Name: netscaler_adc_gateway_CTX696604.nasl

Version: 1.1

Type: Combined

Family: CGI abuses

Published: 7/3/2026

Updated: 7/3/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.06

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-8452

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/h:citrix:netscaler_gateway, cpe:/h:citrix:netscaler_application_delivery_controller

Required KB Items: Host/NetScaler/Detected

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 6/30/2026

Reference Information

CVE: CVE-2026-10816, CVE-2026-10817, CVE-2026-13474, CVE-2026-8451, CVE-2026-8452, CVE-2026-8655

IAVA: 2026-A-0647