New Windows Error Reporting Vulnerability Lets Attackers Escalate to Gain SYSTEM Access

A newly analyzed local privilege escalation vulnerability in the Windows Error Reporting (WER) service allows attackers to easily gain full SYSTEM access. The flaw, tracked as CVE-2026-20817, was considered so structurally dangerous that Microsoft completely removed the vulnerable feature rather than attempting a traditional code patch.​ The security flaw exists within the main executable library […]

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