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Sunday, 4 October 2026
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Cyber Security

Vulnerabilities, threats and incidents, security advisories from CERT-EU, ENISA, CISA and NCSC, AI security and regulation (NIS2, CRA).

#Exploited — 1 article ✕

Critical Citrix NetScaler Vulnerabilities Actively Exploited

Citrix disclosed 8 vulnerabilities affecting customer-managed NetScaler ADC and NetScaler Gateway, including 2 critical unauthenticated RCE flaws with CVSS 9.5 that Citrix confirms are being actively exploited. CERT-EU urges immediate patching and compromise assessment for internet-facing appliances. Other flaws include HTTP request smuggling, memory overflow bugs leading to RCE/DoS, a policy bypass, and a TCP ISN prediction issue.

CERT-EU