Critical Windows Netlogon vulnerability (CVE-2026-41089) exploited in the wild

Source:Heise Online

02 — Who / Subject

Microsoft, Windows Server users

03 — Where / Locus

Global

04 — When / Temporality

June 1, 2026

Verified: June 1, 2026

05 — Why / Core Summary

"Attackers are actively exploiting a critical buffer overflow vulnerability in Windows Server's Netlogon. The vulnerability has a CVSS score of 9.8. Administrators are urged to verify that May security patches are installed."

Conflict Analysis

This is a high-severity threat affecting all supported Windows Server versions. Immediate patching is critical to prevent network compromise.

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