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Citrix NetScaler critical flaw could leak data, update now

Securityaffairs.Co •Pierluigi Paganini • March 24, 2026

Citrix warns of a critical NetScaler flaw (CVE-2026-3055) that could leak sensitive data; users are urged to apply security updates immediately. Citrix issued security updates for two NetScaler vulnerabilities, including a critical memory overread, tracked as CVE-2026-3055 (CVSS score of 9.3), that allows unauthenticated attackers to leak sensitive data. The flaw CVE-2026-3055 is an insufficient […]

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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

Citrix NetScaler critical flaw could leak data, update now

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Extracted Entities

Attack Types (1)

CVEs (1)

MITRE ATT&CK (1)

Vulnerabilities (1)