Topic: denial service

Microsoft Patches Critical Zero-Day and 63 Flaws

November 13, 2025

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Microsoft Patches Critical Zero-Day and 63 Flaws

Microsoft's November 2025 Patch Tuesday addresses 63 vulnerabilities, including one actively exploited zero-day and four critical issues, requiring immediate deployment by system administrators. The update includes the first extended security update (ESU) for Windows 10, urging organizations to u...

Dutch Orgs Hacked via Citrix Netscaler Flaw CVE-2025-6543

Dutch organizations were targeted by cyberattacks exploiting Citrix NetScaler vulnerability CVE-2025-6543, allowing remote code execution or denial-of-service, with breaches obscured by attackers. The flaw, a memory overflow issue in Citrix NetScaler systems, was exploited as a zero-day before pa...

Microsoft Patches 6 Zero-Day Exploits in Critical October Update

Microsoft's October 2025 Patch Tuesday addresses 172 vulnerabilities, including six actively exploited zero-days and eight critical-rated flaws, with a focus on remote code execution and privilege escalation risks. Windows 10 has reached its end of support, requiring users to enroll in Extended S...