Windows Server 2022 build 20348.4297 (KB5070884) — release notes, known issues

• Issue Known issue After installing KB5070884 or later updates, Windows Server Update Services (WSUS) does not display synchronization error details within its error reporting. This functionality is temporarily removed to address the Remote Code Execution Vulnerability, CVE-2025-59287 .

Microsoft's release notes for KB5070884 ›

No problems reported on the forum for this build yet. Threads that name 20348.4297 or KB5070884 and describe a fault appear here automatically.

• Fix WSUS Critical RCE Patch CVE-2025-59287 — Emergency Guidance Jan 13, 2026 · names this build
• Fix Patch WSUS CVE-2025-59287 Now to Protect Foxboro DCS Advisor Dec 18, 2025 · names this build
• Fix Urgent WSUS Patch: CVE-2025-59287 RCE Fix Out-of-Band (2025) Oct 24, 2025 · names this build
• Fix Urgent WSUS Patch for CVE-2025-59287 RCE or Isolate Oct 24, 2025 · names this build
• Coverage Planning Mode in Visual Studio 2022: Copilot Orchestrates Multi‑Step Plans (Public Preview) Oct 23, 2025 · Windows Server 2022 coverage from this build's release window
• Fix Linux Kernel Fix for Noisy ath11k MHI Warnings CVE-2022-49543 Oct 24, 2025 · Windows Server 2022 coverage from this build's release window
• Coverage CVE-2022-49562: Safer KVM PTE Updates with __try_cmpxchg_user Oct 24, 2025 · Windows Server 2022 coverage from this build's release window
• Fix KVM VMX RSB Underflow Patch CVE-2022-49610: Strengthening Linux Hypervisors Oct 24, 2025 · Windows Server 2022 coverage from this build's release window

• Issue Problem logging into Windows 2022 OpenSSH server using public and private key authentication 7 replies · Dec 5, 2025 · 2022 thread from the release window

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