KB5005030: Windows Server 2016 Cumulative Update (August 2021)
The August 2021 Patch Tuesday cumulative update for Windows Server 2016 addresses 44 security vulnerabilities including elevation of privilege and remote code execution flaws.
Attackers targeting unpatched Windows Server 2016 systems can exploit the vulnerabilities addressed in KB5005030 for privilege escalation, lateral movement, and in some cases remote code execution. Servers missing multiple monthly updates accumulate multiple unpatched attack paths simultaneously.
KB5005030 bundles all security fixes for Windows Server 2016 since the July 2021 cumulative update. It addresses vulnerabilities across the Windows kernel, networking stack, print spooler, and Remote Desktop services. Cumulative updates must be applied as a complete package.
Probably yes if any of these apply:
Affected OS versions
An organisation running automated vulnerability scans identifies a cluster of Windows Server 2016 systems missing the August 2021 update. The missing patches include a privilege escalation vulnerability in the Windows kernel that has a public PoC. The exposure window between Patch Tuesday and the organisation's 30-day patching SLA creates unnecessary risk.
Manual download
For air-gapped servers or out-of-band deployment. Microsoft Update Catalog returns every OS-version variant of this update.
↗ Microsoft Update CatalogKB5005030Manual remediation steps
⏱ 30–60 minutes including rebootCheck if KB5005030 is Installed
Get-HotFix -Id KB5005030
# No output = patch not installed
Apply via Windows Update
Apply Manually
Apply via WSUS / SCCM
Approve KB5005030 in your patch management console.
Verify
Get-HotFix -Id KB5005030
No tested PowerShell script for this entry yet. We’re prioritising automation based on user demand.
References