smb hardening

Microsoft's security track for January 2026 includes an advisory for CVE-2026-20934, a Windows SMB Server Elevation of Privilege vulnerability that Microsoft has cataloged in the Security Update Guide. The entry identifies the affected component as the Server Message Block (SMB) Server and...

Below is a comprehensive technical write‑up on CVE-2026-20921: what it is, why it matters, how it can be exploited, detection and mitigation guidance, and recommended steps for defenders. I base the summary on Microsoft’s advisory and on Microsoft guidance for SMB hardening and common...

Windows 11’s September Patch Tuesday cumulative, KB5065426 (OS Build 26100.6584), has been linked to widespread file- and print-sharing failures on some machines, with multiple community threads and Microsoft Q&A posts reporting disabled sharing settings, networks switching from Private to...

Microsoft’s September 9, 2025 Patchday brought a dense, operationally important set of fixes for Microsoft Office alongside a much larger ecosystem update—roughly eighty CVEs across Windows, Office, Azure and related components—forcing administrators to treat this month’s release as more than...

Microsoft has pushed the September 2025 cumulative for Windows 11 version 23H2 — KB5065431 (OS build 22631.5909) — and the update is available both through Windows Update and as an offline .msu installer from the Microsoft Update Catalog. This release is a targeted quality-and-security rollup...

Microsoft has published advisory guidance tied to CVE‑2025‑55234 that focuses less on a new exploitable bug and more on enabling administrators to find and measure exposure to SMB relay‑style elevation‑of‑privilege attacks before they flip stronger hardening controls. The short form: the SMB...

Microsoft released a cumulative security update today for Windows 11’s servicing branches 22621 and 22631 — published as KB5065431 (OS Builds 22621.5909 and 22631.5909) — that combines a Latest Cumulative Update (LCU) with a servicing‑stack update (SSU) and carries a set of security and quality...