#NØØT_Security_Alerts 🚨 #ALERT — MICROSOFT QUIC CRITICAL RCE: UNAUTHENTICATED NETWORK ATTACK POSSIBLE October 13, 2026 DISCLOSED BY: Microsoft Security Response Center PRODUCT: Microsoft QUIC CVE: CVE-2026-100219 SEVERITY: CRITICAL — CVSS 9.8 AFFECTED VERSIONS: Windows 11 23H2–26H2 and Windows Server 2022/2025, subject to applicable vulnerable builds. IMPACT: A use-after-free vulnerability could permit unauthenticated remote code execution. EXPOSURE: Affected systems processing attacker-controlled QUIC traffic through a reachable vulnerable service. Microsoft assigns network attack complexity LOW, with no required privileges or user interaction. EXPLOITATION STATUS: VENDOR-CONFIRMED CRITICAL RCE. No independently confirmed malicious exploitation or working public PoC. Forensic triage: Identify QUIC-enabled services and externally reachable endpoints. Investigate unusual QUIC traffic, service crashes and unexpected execution activity. No verified attacker-specific IOCs published. URGENT ACTION: Apply Microsoft’s October 13 Windows security updates. Prioritize exposed QUIC services. Restrict unnecessary network exposure and investigate suspicious activity. SOURCE: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100219 OFFICIAL CVE: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/100xxx/CVE-2026-100219.json CONFIDENCE: HIGH — Microsoft’s official vulnerability record establishes the remote execution risk, affected platforms and CVSS 9.8 severity. Actual exploitation remains unverified. #CyberSecurity #ThreatIntel #Microsoft #QUIC #RCE #NetworkSecurityً