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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0503
Memory overflow vulnerability in Citrix Products

Original Issue Date:October 14, 2026

Severity Rating: CRITICAL

Software Affected

  • Citrix NetScaler ADC before 14.1-73.46
  • Citrix NetScaler ADC before 13.1-64.29
  • Citrix NetScaler ADC 14.1-FIPS before 14.1-73.46
  • Citrix NetScaler ADC 13.1-FIPS and 13.1-NDcPP before 13.1.37.283
  • Citrix NetScaler Gateway before 14.1-73.46
  • Citrix NetScaler Gateway before 13.1-64.29

Overview

A vulnerability has been reported in Citrix NetScaler ADC and Citrix NetScaler Gateway which could allow a remote attacker to achieve remote code execution (RCE) or cause denial of service (DoS) conditions on the targeted system.

Target Audience:
All organizations and individuals using Citrix NetScaler ADC and NetScaler Gateway.

Risk Assessment:
Critical risk of disruption of service or remote code execution.

Impact Assessment:
Potential for disruption of service or remote code execution.

Description

NetScaler ADC and NetScaler Gateway are application delivery controller (ADC) and secure remote access solutions used to provide load balancing, application delivery and VPN services for enterprise environments.

This vulnerability exists in Citrix NetScaler ADC and Citrix NetScaler Gateway due to improper restriction of operations within the bounds of a memory buffer. A remote attacker could exploit this vulnerability by sending a specially crafted request.

Successful exploitation of these vulnerabilities could allow an attacker to achieve remote code execution (RCE) or cause denial of service (DoS) conditions on the targeted system.

Solution

Apply appropriate updates as mentioned as mentioned by the Vendor:
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697191

https://community.citrix.com/techzone-blogs/110_security-updates/

Vendor Information

 
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697191
https://community.citrix.com/techzone-blogs/110_security-updates/

References

 
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697191
https://community.citrix.com/techzone-blogs/110_security-updates/

CVE Name
CVE-2026-107406

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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