cve 2026 20817

About this tag
CVE-2026-20817 is a local privilege escalation vulnerability in Windows Error Reporting (WER) that Microsoft has addressed in a security update. The flaw allows an authorized local attacker to elevate privileges on a host, making it a critical patch-and-hunt item for organizations. Discussions on WindowsForum.com emphasize the urgency of applying the patch to prevent post-compromise privilege escalation. The vulnerability is part of Microsoft's Security Update Guide and requires immediate attention from IT administrators to secure affected systems.
  1. CVE-2026-20817: Urgent Patch for Windows Error Reporting Local Privilege Escalation

    Microsoft’s Security Update Guide lists CVE-2026-20817 as a Windows Error Reporting vulnerability that can be abused by an authorized local attacker to elevate privileges on a host, and this advisory should be treated as an urgent patch-and-hunt item for any organization that wants to avoid...