A critical security flaw in Windows Error Reporting Service has been discovered, allowing attackers with standard user access to escalate their privileges to SYSTEM-level control. CVE-2026-20817, patched by Microsoft in January 2026, represents a significant threat to Windows environments due to its low attack complexity and potential for complete system compromise. CVE-2026-20817 is a local […] The post Windows Error Reporting Service Vulnerability Let Attackers Elevate Privileges – PoC Released appeared first on Cyber Security News.