Critical

Critical NetScaler Flaw Can Bypass Authentication on Certain Gateway and AAA Servers

The Hacker News

August 20, 2026 at 1:35 PM

Overview

Citrix has issued updates to fix two security vulnerabilities in its NetScaler ADC and NetScaler Gateway products, one of which is a serious authentication bypass flaw. This vulnerability allows attackers to potentially gain unauthorized access to systems that rely on these products for secure access. The affected versions include customer-managed NetScaler ADC, NetScaler Gateway, certain FIPS and NDcPP builds, and SecurAccess. It's important for organizations using these products to apply the updates promptly to protect against potential exploitation. Failure to do so could expose sensitive data and compromise network security.

Key Takeaways

Affected Systems: NetScaler ADC, NetScaler Gateway, certain FIPS and NDcPP builds, SecurAccess
Action Required: Citrix has released updates to address the vulnerabilities; users should apply these updates immediately.
Timeline: Newly disclosed

Original Article Summary

Citrix has released updates to address two security flaws impacting NetScaler ADC and NetScaler Gateway deployments, including a critical-severity authentication bypass vulnerability. According to the cloud computing and virtualization technology company, the issues affect customer-managed NetScaler ADC and NetScaler Gateway, including certain FIPS and NDcPP builds, as well as SecurAccess

Impact

NetScaler ADC, NetScaler Gateway, certain FIPS and NDcPP builds, SecurAccess

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Newly disclosed

Remediation

Citrix has released updates to address the vulnerabilities; users should apply these updates immediately.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Vulnerability, Critical.

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