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CCB urgent patch warning for CVE-2026-41089 on Windows servers

Public Sector Action
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H score 48
1 unique sources, 1 articles

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Belgium's CCB warned that CVE-2026-41089 is being actively exploited in the wild, urging admins to immediately patch vulnerable Windows servers because the flaw can enable remote code execution on domain controllers. The advisory covers Windows Netlogon, a core authentication service used in Windows domain-based networks, and the issue affects all currently supported Windows Server versions, including Windows Server 2025. Microsoft had already fixed the bug in the May 2026 Patch Tuesday release.

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Timeline

  1. 01.06.2026 15:30 2 articles · 4h ago

    CCB warns of active CVE-2026-41089 exploitation in Windows Netlogon

    Industry Or Public Sector Update

    Belgium's Centre for Cybersecurity Belgium (CCB) warned that CVE-2026-41089 in Windows Netlogon is being actively exploited in the wild and urged administrators of vulnerable Windows Server systems to patch immediately. Microsoft says the May 2026 Patch Tuesday fix addresses a stack-based buffer overflow that can let an unauthenticated attacker gain remote code execution on targeted domain controllers, and the flaw affects all currently supported Windows Server versions, including Windows Server 2025.

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