Windows Server 2016

Reported Context (6)

Microsoft: Windows Server 2016 reaches end of support in January Windows Server 2016 to Stop Receiving Security Updates in January 2027
Microsoft says the August 2026 security update can cause 0xc0000409 errors on Windows Server 2016 systems when the Compatibility Appraiser diagnostic service is enabled, leading to recurring CompatTelRunner.exe crashes. August 2026 Update Triggers CompatTelRunner.exe Errors on Windows Server 2016
Microsoft has fixed a known issue that caused the June 2026 KB5094122 security update to fail on some Windows Server 2016 systems that had not installed the previous KB5087537 update. Microsoft Fixes Windows Server 2016 Security Update Installation Failures
The campaign targeted a legacy Windows Server 2016 IIS host with end-of-life .NET Framework 4.0. OP-512 Uses Custom Web Shell Framework to Target IIS Servers
The update also adds shared audio, better battery and sensor behavior, and phased Secure Boot certificate rollout while Microsoft notes a separate known issue on Windows Server 2016 after KB5087537. Windows 11 KB5089573 Preview Adds Performance Improvements and Secure Boot Certificate Rollout

Malware (1)

People (1)

Threat Actors (5)

MITRE ATT&CK (4)

Vendors (1)

Products (10)

Tools (1)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.