INCIBE Warns of Six Citrix NetScaler Flaws

Spain’s National Cybersecurity Institute, INCIBE, issued an alert on July 3, 2026 for six vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway, five classified as high severity and one as medium. According to the advisory, the attack vectors can lead to memory disclosure and denial of service, and Citrix recommends updating immediately because no effective mitigations have been documented.