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Citrix NetScaler
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- 1Citrix and Fortinet zero-days under active exploitation●Recent news highlights critical cybersecurity threats as Citrix NetScaler (CVE-2026-88772) and FortiMail (CVE-2026-10428
Security researchers warn that newly disclosed zero-day vulnerabilities in Citrix NetScaler (CVE-2026-88772) and FortiMail (CVE-2026-104286) are being actively exploited, with critical infrastructure and government organisations among the targets. Apple has separately patched a CoreGraphics flaw already used in attacks. Administrators are urged to apply patches urgently and review systems for signs of compromise.
- 2US and Australia warn of new Citrix NetScaler flaw●US, Australia warn of latest Citrix vulnerability after NetScaler advisory
The United States and Australia have issued warnings about a newly disclosed vulnerability affecting Citrix NetScaler, urging organisations to apply the vendor's advisory and patch affected systems promptly. Citrix NetScaler appliances are widely used by businesses and governments for application delivery and secure remote access, making exploited flaws a common target for attackers seeking entry into corporate networks. Security agencies are pressing administrators to review the advisory and update without delay.
- 3Citrix Issues Emergency Patches for Exploited NetScaler Zero-Day●Citrix Patches NetScaler Zero-Day Exploited in Attacks Against Specific Organizations Citrix released emergency patches
Citrix has released emergency patches for CVE-2026-88779, a high-severity zero-day vulnerability in NetScaler ADC and Gateway that is being actively exploited in attacks targeting specific organizations. The flaw allows attackers to cause denial-of-service conditions and potentially execute arbitrary code. Security teams are urged to apply the updates immediately and check systems for signs of compromise.
- 4Citrix NetScaler Zero-Days CVE-2026-88771 and CVE-2026-88772 Raise Alarm▼Citrix NetScaler Zero-Days (CVE-2026-88771 and CVE-2026-88772): A Skeleton Key at the Network Edge If your organisation
Security researchers are warning about two zero-day vulnerabilities in Citrix NetScaler, tracked as CVE-2026-88771 and CVE-2026-88772, described as a 'skeleton key' at the network edge. Organisations running internet-facing NetScaler appliances are being urged to assume possible compromise if the devices were exposed in the past month. Administrators are advised to patch immediately and review access logs.
- 5New NetScaler Zero-Day Exploited to Disrupt SAML Deployments▼New NetScaler Zero-Day Exploited in Targeted Attacks Can Knock SAML Deployments Offline
Security researchers report a new zero-day vulnerability in Citrix NetScaler appliances that is being exploited in targeted attacks and can take SAML authentication deployments offline. Organizations relying on NetScaler for single sign-on face potential service outages and unauthorized access risks. Administrators are being urged to apply patches and review their appliances for signs of compromise as details of active exploitation emerge.