NetScaler ADC and Gateway Before 14.1-73.37 Pre-Authentication Memory Overflow

NetScaler ADC and Gateway versions before 14.1-73.37 contain a pre-authentication memory overflow in the Oracle TNS DataStream parser. A malformed runt segment can cause an out-of-bounds write and denial of service. This advisory includes technical analysis and packet-flow conditions...

Critical Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC, Gateway

Update October 9, 2026 : CISA has updated this Alert to: 1 include CVE-2026-107406; 2 include CVE-2026-88779 following its addition to the KEV Catalog on Oct. 4, 2026; 3 clarify the potential relationship between CVE-2026-88779 and CVE-2026-88771; and 4 emphasize the importance of promptly applyi...

Citrix Patches Critical NetScaler Flaw That Could Enable RCE in SAML Deployments

Citrix has released patches for yet another critical security flaw impacting NetScaler ADC and NetScaler Gateway that could result in remote code execution or denial-of-service DoS under certain conditions. "CVE-2026-107406 is a memory overflow vulnerability that may lead to remote code execution...

Vulnerability handling in Citrix NetScaler ADC and Gateway

Citrix has identified a vulnerability in NetScaler ADC and Gateway products when these are configured as SAML Service Providers SPs or Identity Providers IdPs. The vulnerability involves a memory overflow that occurs during the processing of SAML messages. This vulnerability can be activated...

EUVD-2026-95315

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: For the following versions: Applicable only...

CVE-2026-107406

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: For the following versions: Applicable only...

CVE-2026-107406 Memory overflow vulnerability leading to Remote Code Execution or Denial of Service

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: For the following versions: Applicable only...

CVE-2026-107406 Memory overflow vulnerability leading to Remote Code Execution or Denial of Service

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: For the following versions: Applicable only...

CVE-2026-107406

A memory overflow vulnerability exists in NetScaler ADC and NetScaler Gateway when configured as a SAML SP or SAML IdP . This flaw can lead to Remote Code Execution (RCE) or a Denial of Service (DoS) . The vulnerability impacts various versions, including NetScaler ADC and Gateway versions before...

Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-107406

Severity - Critical Description of Problem A vulnerability has been discovered in Citrix NetScaler ADC formerly Citrix ADC and Citrix NetScaler Gateway formerly Citrix Gateway. Refer below for further details. Affected Versions: The following supported versions of Citrix NetScaler ADC and Citrix...

CVE-2026-107406: Improper Restriction of Operations within the Bounds of a Memory Buffer

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: For the following versions: Applicable only...

PT-2026-108214

Name of the Vulnerable Software and Affected Versions NetScaler ADC and NetScaler Gateway versions prior to 14.1-73.37 NetScaler ADC 14.1-FIPS versions prior to 14.1-73.37 FIPS NetScaler ADC and NetScaler Gateway versions 14.1-73.37 through 14.1-73.41 NetScaler ADC 14.1-FIPS versions 14.1-73.37...

NetScaler ADC and NetScaler Gateway DoS (CTX697174)

The remote NetScaler ADC formerly Citrix ADC or NetScaler Gateway formerly Citrix Gateway device is 13.1 prior to 13.1-64.28, or 14.1 prior to 14.1-73.41, or 13.1-FIPS/NDcPP prior to 13.1-37.282, or 14.1-FIPS prior to 14.1-73.41. It is, therefore, affected by multiple vulnerabilities: - Citrix...

⚡ Weekly Recap: NetScaler and FortiMail 0-Days, AI Coding Leaks, Spectre v2 and Ransomware Arrests

A blank field. A public repo. One reply to an email. A box left exposed. None of this sounds dramatic, which is partly the problem. This week’s threats keep finding leverage in small things that were easy to overlook. There are actively exploited bugs in the mix, cleaner intrusion paths, smarter...

New NetScaler Zero-Day Exploited in Targeted Attacks Can Knock SAML Deployments Offline

Citrix has released security updates for a high-severity security flaw in NetScaler ADC and NetScaler Gateway that has been exploited as part of targeted zero-day attacks. The vulnerability, tracked as CVE-2026-88779 , carries a CVSS score of 8.7 out of 10.0. "CVE-2026-88779 is a memory overflow...

NetScaler ADC Buffer Overflow DoS

The vulnerability of the NetScaler ADC application delivery controller formerly Citrix ADC and the NetScaler Gateway virtual environment access control system formerly Citrix Gateway is related to the execution of operations outside of the buffer in memory. Exploiting this vulnerability could all...

Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

Citrix has identified a vulnerability in NetScaler ADC and NetScaler Gateway. This vulnerability involves a memory overflow in versions of NetScaler ADC and NetScaler Gateway that are older than 14.1-73.41 and 13.1-64.28. This vulnerability can lead to a Denial of Service DoS attack, thereby...

CVE-2026-88779

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28...

CVE-2026-88779 Memory overflow vulnerability leading to Denial of Service

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28...

EUVD-2026-92065

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28...