CVE-2026-20817 – Windows Error Reporting Privilege Escalation Patch

Microsoft addressed a high-severity vulnerability in Windows Error Reporting that could allow local attackers to escalate privileges. The issue enables an attacker with limited access to gain elevated permissions, potentially leading to full system compromise. CVE-2026-20817 has a CVSS score of 7.8, which is High severity.

Proof-of-concept code is publicly available, increasing the risk of exploitation in real-world environments. This makes timely patching critical, especially for systems where local access is possible or shared environments are in use.