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Critical NetScaler ADC and Gateway Vulnerabilities Enable Remote Attacks on Affected Systems

Cybersecuritynews •Guru Baran • March 23, 2026

Cloud Software Group has released urgent security patches for NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway), addressing two significant vulnerabilities that could allow unauthenticated remote attackers to compromise affected systems. Organizations running customer-managed deployments are strongly urged to apply the updates immediately. CVE-2026-3055: Critical Out-of-Bounds Read via SAML IDP The more […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Vulnerabilities in Citrix NetScaler ADC and Gateway Require Immediate Patching Cloud Software Group has identified and patched two critical vulnerabilities in Citrix NetScaler ADC and Gateway products. The vulnerabilities, tracked as CVE-2026-3055, allow unauthenticated remote attackers to exploit memory overreads and potentially leak sensitive data. Organizations using these systems are urged to apply the updates immediately to mitigate risks. The vulnerabilities were discovered during an internal review and have been addressed in a security bulletin issued on March 23, 2026. The CVSS score for CVE-2026-3055 is 9.3, indicating a high level of severity. Affected organizations should refer to Citrix Security Bulletin CTX696300 for detailed information and remediation steps. The urgency of the situation is underscored by the potential for exploitation leading to serious data breaches. Administrators are advised to prioritize these updates to protect their systems from possible attacks. 30 sources 73

Extracted Entities

CVEs (1)

CVE-2026-3055

Platforms (2)

NetScaler ADC NetScaler Gateway