Windows Server 2022 build 20348.4651 (KB5078136) — release notes, known issues

Windows Server · 2022 · Release · Out-of-band update

January 24, 2026—KB5078136 (OS Build 20348.4651) Out-of-band

Windows Server 2022: Supported LTSC release

All 2022 builds JSON — this build from the builds API

Microsoft's known issues — KB5078136

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 . After installing this update, some Secure Launch -capable PCs with Virtual Secure Mode (VSM) enabled are unable to shut down or enter hibernation. Instead, the device restarts. Workaround: This issue is addressed in KB5075906 .

No problems reported on the forum for this build yet. Threads that name 20348.4651 or KB5078136 and describe a fault appear here automatically.

Coverage Windows Server 2022 File Sharing Guide: GUI Setup and Automation Feb 7, 2026 · Windows Server 2022 coverage from this build's release window
Fix etcd CVE-2022-34038: Patch fixes PageWriter panic in v3.5.5 Feb 18, 2026 · Windows Server 2022 coverage from this build's release window
Issue CVE-2022-47696: Binutils objdump DoS crash from crafted files Feb 18, 2026 · Windows Server 2022 coverage from this build's release window
Fix Patch Binutils addr2line CVE-2022-47673: Fix Out-of-Bounds Read Now Feb 18, 2026 · Windows Server 2022 coverage from this build's release window
Fix Go gzip Reader DoS: CVE-2022-30631 Fixed in Go 1.17.12 and 1.18.4 Feb 18, 2026 · Windows Server 2022 coverage from this build's release window
Issue CVE-2022-30629: Go TLS Ticket Age Add Bug and Azure Linux Attestation Feb 18, 2026 · Windows Server 2022 coverage from this build's release window
Fix OSTree CVE-2022-47085: Safe Panic Handling in Rust Bindings Fixed Feb 18, 2026 · Windows Server 2022 coverage from this build's release window
Coverage CVE-2022-28737 Shim Overflow: Azure Linux Attestation and Exposure Feb 18, 2026 · Windows Server 2022 coverage from this build's release window

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