Critical Vulnerability in Citrix NetScaler Systems Actively Exploited

Researchers from watchTowr and Defused have identified active exploitation of CVE-2026-3055, a critical vulnerability affecting Citrix NetScaler systems. The flaw is currently being targeted by attackers in the wild, though specific details about the exploitation methods or affected versions remain undisclosed. No exact timeline for the discovery or exploitation attempts was provided in the report. The vulnerability’s impact includes potential unauthorized access or compromise of NetScaler deployments. The findings were published by Infosecurity Magazine without additional technical specifics or mitigation guidance.