Main Vulnerability Database Vulnerabilities #VU135997

Buffer overflow in Citrix Netscaler ADC and Citrix NetScaler Gateway - CVE-2026-8452

Published: June 30, 2026

Vulnerability identifier: #VU135997

CSH Severity: High

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-8452

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper restriction of operations within the bounds of a memory buffer in the gateway and AAA virtual server functionality when handling network requests. A remote attacker can send a specially crafted request to cause a denial of service.

The appliance must be configured as a gateway feature or an AAA virtual server.

Affected software

Citrix Netscaler ADC
Citrix NetScaler Gateway

How to mitigate CVE-2026-8452

Install security update from vendor's website.

Citrix Netscaler ADC - addressed in versions 13.1-63.18, 14.1-72.61
Citrix NetScaler Gateway - addressed in versions 13.1-63.18, 14.1-72.61

External References

Related Security Bulletins