Citrix Netscaler Application Delivery Controller

NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allow remote attackers to gain privilege on a target system.

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 11.x before 11.0 Build 64.34, 10.5 before 10.5 Build 59.13, and 10.5.e before Build 59.1305.e allows remote attackers to gain privileges via unspecified NS Web GUI commands.

Unspecified vulnerability in the Diffie-Hellman key agreement implementation in the management GUI Java applet in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway before 9.3-66.5 and 10.x before 10.1-122.17 has unknown impact and vectors.

Unspecified vulnerability in the management GUI in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway before 9.3-66.5 and 10.x before 10.1-122.17 has unspecified impact and vectors, related to certificate validation.

Unauthenticated remote code execution

Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service

Memory overflow vulnerability leading to unintended control flow and Denial of Service

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-19490

Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service

Insufficient input validation leading to memory overread

Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service

Multiple Memory overflow vulnerabilities leading to unpredictable or erroneous behavior and Denial of Service

Unauthenticated sensitive information disclosure

NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread

NetScaler ADC and NetScaler Gateway - Improper access control on the NetScaler Management Interface

Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker with access to NSIP, CLIP or SNIP with management interface to perform Authenticated (low privileged) remote code execution on Management Interface.

Unauthorized redirect vulnerability in Citrix NetScaler ADC before 10.1 135.8, 10.5 61.11, 11.0 65.31/65.35F and 11.1 47.14 allows a remote attacker to steal session cookies of a legitimate AAA user via manipulation of Host header.

Insufficient input validation leading to memory overread

Denial of service via malformed HTTP/2 requests

Memory safety vulnerability leading to memory corruption and Denial of Service

Reflected Cross-Site Scripting (XSS)

Improper Restriction of Operations within the Bounds of a Memory Buffer in NetScaler ADC and NetScaler Gateway allows Unauthenticated Denial of Service and Out-Of-Bounds Memory Read

Denial of service

Authenticated user can access unintended user capabilities

Privilege Escalation to root administrator (nsroot)

Citrix NetScaler Application Delivery Controller (ADC) 10.0 before 10.0-76.7 allows remote attackers to cause a denial of service (nsconfigd crash and appliance reboot) via a crafted request.

Directory traversal vulnerability in NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allows remote attackers to traverse the directory on the target system via a crafted request.

Command injection vulnerability in Citrix NetScaler ADC and NetScaler Gateway 11.0 before build 70.16, 11.1 before build 55.13, and 12.0 before build 53.13; and the NetScaler Load Balancing instance distributed with NetScaler SD-WAN/CloudBridge 4000, 4100, 5000 and 5100 WAN Optimization Edition 9.3.0 allows remote attackers to execute a system command or read arbitrary files via an SSH login prompt.

NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allow remote attackers to download arbitrary files on the target system.

A Buffer Overflow exists in Citrix NetScaler Gateway 10.5.x before 10.5.70.x, 11.1.x before 11.1.59.10, 12.0.x before 12.0.59.8, and 12.1.x before 12.1.49.23 and Citrix Application Delivery Controller 10.5.x before 10.5.70.x, 11.1.x before 11.1.59.10, 12.0.x before 12.0.59.8, and 12.1.x before 12.1.49.23.

Denial of Service

Arbitrary File Read (Unauthenticated)

Insufficient input validation leading to memory overread

The Administrative Web Interface in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 11.x before 11.0 Build 64.34, 10.5 before 10.5 Build 59.13, 10.5.e before Build 59.1305.e, and 10.1 allows remote attackers to conduct clickjacking attacks via unspecified vectors.

Open redirect vulnerability allows a remote unauthenticated attacker to redirect users to arbitrary websites

Citrix NetScaler Gateway 12.1 before build 50.31, 12.0 before build 60.9, 11.1 before build 60.14, 11.0 before build 72.17, and 10.5 before build 69.5 and Application Delivery Controller (ADC) 12.1 before build 50.31, 12.0 before build 60.9, 11.1 before build 60.14, 11.0 before build 72.17, and 10.5 before build 69.5 allow remote attackers to obtain sensitive plaintext information because of a TLS Padding Oracle Vulnerability when CBC-based cipher suites are enabled.

The TLS and DTLS processing functionality in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway devices with firmware 9.x before 9.3 Build 68.5, 10.0 through Build 78.6, 10.1 before Build 130.13, 10.1.e before Build 130.1302.e, 10.5 before Build 55.8, and 10.5.e before Build 55.8007.e makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a variant of CVE-2014-3566 (aka POODLE).

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway (formerly Access Gateway Enterprise Edition) before 9.3-62.4 and 10.x before 10.1-126.12 allows attackers to obtain sensitive information via vectors related to a cookie.

Cross-site scripting (XSS) vulnerability in administration user interface in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway (formerly Access Gateway Enterprise Edition) 10.1 before 10.1-126.12 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.