The Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent warning regarding a critical zero-day vulnerability in Microsoft Windows. On April 28, 2026, the agency officially added this security flaw to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability impacts the Microsoft Windows Shell and is actively being exploited in real-world attacks. Organizations worldwide […] The post CISA Warns Microsoft Windows Shell 0-click Vulnerability Exploited in Attacks appeared first on Cyber Security News.