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CISA Warns Microsoft Windows Shell 0-click Vulnerability Exploited in Attacks

📅 29 April 2026 at 11:36 UTC📰 Cyber Security NewsView original source ↗
CISA Warns Microsoft Windows Shell 0-click Vulnerability Exploited in Attacks

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.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A critical zero-day vulnerability in Microsoft Windows Shell is being actively exploited in real-world attacks, posing a significant threat to organizations worldwide. The vulnerability was added to CISA's KEV catalog on April 28, 2026.

⚙️Technical Details
Affected Systems
Microsoft Windows
Attack Vectors
Microsoft Windows Shell
💥Impact Assessment
Severity: critical
Who Is at Risk
Organizations worldwide
🛡️Recommended Actions
1Apply a patch for the Microsoft Windows Shell vulnerability as soon as possible.
2Monitor system logs and network traffic for signs of exploitation.
3Implement additional security controls to prevent lateral movement in case of compromise.
📦Affected Products
Microsoft Windows

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