A critical local privilege escalation (LPE) vulnerability, identified as CVE-2026-20817, has been publicly documented following the release of a proof-of-concept (PoC) exploit. Discovered in the Windows Error Reporting (WER) service, the flaw allows an authenticated, low-privileged user to execute arbitrary code with SYSTEM-level access. Vulnerability Overview Feature Details CVE ID CVE-2026-20817 ​ Severity Score CVSS 7.8 […]

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