Tracker / CVE-2026-21251
CVE-2026-21251
High 7.8
Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally.
Affected products and versions
| microsoft | windows_server_2016 · … → 10.0.14393.8868 |
|---|---|
| microsoft | windows_server_2019 · … → 10.0.17763.8389 |
| microsoft | windows_server_2022 · … → 10.0.20348.4711 |
| microsoft | windows_server_2022_23h2 · … → 10.0.25398.2149 |
| microsoft | windows_server_2025 · … → 10.0.26100.32313 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.