Main Vulnerability Database Vulnerabilities #VU135996

Out-of-bounds read in Citrix Netscaler ADC and Citrix NetScaler Gateway - CVE-2026-8451

Published: June 30, 2026

Vulnerability identifier: #VU135996

CSH Severity: Medium

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

CVE-ID: CVE-2026-8451

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to out-of-bounds read in the SAML IdP functionality when processing SAML IdP input. A remote attacker can send crafted input to disclose sensitive information.

NetScaler ADC or NetScaler Gateway must be configured as a SAML IdP.

Affected software

Citrix Netscaler ADC
Citrix NetScaler Gateway

How to mitigate CVE-2026-8451

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