The hacking of internet-exposed, vulnerable Citrix NetScaler ADC and Gateway deployments has escalated. What started as stealthy targeting via zero-day exploits has now become widespread “spray and pray” exploitation, fueled by the publication of a root-cause analysis and a proof-of-concept exploit for CVE-2026-88771, which is remotely exploitable on unpatched devices with the default configuration. From rumor to confirmed zero-day Rumors about a NetScaler zero-day being exploited in the wild started late last week, and were … More → The post NetScaler zero-day exploitation escalates into mass attacks (CVE-2026-88771) appeared first on Help Net Security .