Back Digital.Nhs.Uk

CC-4759

Digital.Nhs.Uk •[email protected] (NHS Digital) • March 23, 2026

Advisory addresses two vulnerabilities which if exploited could lead to User Session Mixup or memory overread

The following platforms are known to be affected:

Citrix has released a critical security bulletin addressing two vulnerabilities affecting NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway).

Affected organisations are encouraged to review Citrix Security Bulletin CTX696300 and apply the relevant updates as soon as possible.

Last edited: 23 March 2026 12:22 pm

The full story

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

CC-4759

The full story

Extracted Entities

Companies (1)

Platforms (2)