Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

CISA has ordered U.S. federal agencies to patch a Microsoft Defender privilege escalation flaw (dubbed BlueHammer) that has ...

All versions of Windows clients, from Windows 7 through current Windows 11 versions, contain a 0-day vulnerability that could allow attackers to capture NTLM authentication hashes from users of ...

Windows has a zero-day vulnerability that allows attackers to escalate their privileges. A patch is not yet available.

CISA has expanded the KEV catalog to include seven vulnerabilities, including Windows flaws that lead to privilege escalation ...

Critical154Important1Moderate0LowMicrosoft addresses 163 CVEs in the April 2026 Patch Tuesday release, including two zero-day ...

Microsoft’s April 2026 Patch Tuesday fixes 165 vulnerabilities, including two zero-days, in one of the company’s largest ...