Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

Citrix has identified vulnerabilities in NetScaler ADC and NetScaler Gateway. The vulnerability with identifier CVE-2026-19489 involves a memory overflow in NetScaler ADC and NetScaler Gateway when the products are configured as SIP ALG within a Large Scale NAT LSN group. This memory allocation...

NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX696939)

The remote NetScaler ADC formerly Citrix ADC or NetScaler Gateway formerly Citrix Gateway device is 13.1 prior to 13.1-63.21, or 14.1 prior to 14.1-73.32, or 13.1-FIPS/NDcPP prior to 13.1-37.277, or 14.1-FIPS prior to 14.1-73.32. It is, therefore, affected by multiple vulnerabilities: -...

CVE-2026-19490

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

CVE-2026-19489

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

EUVD-2026-62395

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

CVE-2026-19490

CVE-2026-19490 is an authentication bypass (CWE-288) in NetScaler ADC/Gateway affecting versions 14.1 before 73.32 and 13.1 before 63.21, exploitable when SAML actions or Gateway/AAA vservers are configured; no workaround exists, patching to 14.1-73.32 or 13.1-63.21 is required.

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

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

EUVD-2026-62394

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

CVE-2026-19489

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

CVE-2026-19489

Citrix NetScaler ADC and Gateway are affected by a HIGH severity (CVSS 8.8) network-reachable vulnerability. Affected versions span 14.1-73.32 and 13.1-63.21. Impact emphasizes availability with low confidentiality and integrity effects. No root cause, exploit details, or patch version are provid...

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-19489 and CVE-2026-19490

Multiple vulnerabilities have been discovered in NetScaler ADC formerly Citrix ADC and NetScaler Gateway formerly Citrix Gateway. Refer below for further details. The information on this page is being provided to you on an "AS IS" and "AS-AVAILABLE" basis. The issues described on this page may or...

PT-2026-78327

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21...

PT-2026-78351

Name of the Vulnerable Software and Affected Versions NetScaler ADC versions 14.1 through 73.32 NetScaler ADC versions 13.1 through 63.21 NetScaler Gateway versions 14.1 through 73.32 NetScaler Gateway versions 13.1 through 63.21 Description An authentication bypass exists in certain Gateway and...

VulnCheck KEV: CVE-2026-8452

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...

Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of-Service

Citrix on Tuesday released security updates to address multiple flaws in NetScaler ADC formerly Citrix ADC and NetScaler Gateway formerly Citrix Gateway that could be exploited by an attacker to facilitate arbitrary file reads or trigger a denial-of-service DoS condition. The vulnerabilities are...

VulnCheck KEV: CVE-2026-8451

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-2026-8655

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 recursi...

CVE-2026-8452

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-2026-8451

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-2026-13474

Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server of type LB, CS, VPN or the service configured on NetScaler...