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Microsoft has released security updates addressing more than 230 vulnerabilities across Windows and related components, with national cyber authorities urging organizations to prioritize deployment. NCSC-NL highlighted five of the most severe issues—CVE-2026-59124, CVE-2026-62815, CVE-2026-62878, CVE-2026-62893, and CVE-2026-65791—affecting Microsoft HPC Pack, Microsoft QUIC, Windows DNS, Windows Deployment Services, and Windows iSCSI Target Service. According to the advisory, these flaws could enable unauthenticated remote code execution or unauthorized access on exposed systems.
The broader update set spans core Windows services and subsystems and includes vulnerabilities tied to privilege escalation, remote code execution, information disclosure, denial of service, spoofing, security feature bypass, and data tampering. The guidance applies across supported Windows 10, Windows 11, Windows Server, Windows App Client for Windows Desktop, and Windows Remote Help products. NCSC-NL assessed the likelihood of exploitation as medium and the potential impact as high, reinforcing Microsoft's recommendation that defenders accelerate patching of affected environments.
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