7.8
High
CVE-2026-20817 Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker…
Description
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.4648 | 10.0.20348.4648 |
| Windows 10 Version 21H2 10.0 | 10.0.19044.0 → < 10.0.19044.6809 | 10.0.19044.6809 |
| Windows 10 Version 22H2 10.0 | 10.0.19045.0 → < 10.0.19045.6809 | 10.0.19045.6809 |
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.32230 | 10.0.26100.32230 |
| Windows 11 Version 25H2 10.0 | 10.0.26200.0 → < 10.0.26200.7623 | 10.0.26200.7623 |
| Windows 11 version 22H3 10.0 | 10.0.22631.0 → < 10.0.22631.6491 | 10.0.22631.6491 |
| Windows 11 Version 23H2 10.0 | 10.0.22631.0 → < 10.0.22631.6491 | 10.0.22631.6491 |
| Windows Server 2022, 23H2 Edition (Server Core installation) 10.0 | 10.0.25398.0 → < 10.0.25398.2092 | 10.0.25398.2092 |
| Windows 11 Version 24H2 10.0 | 10.0.26100.0 → < 10.0.26100.7623 | 10.0.26100.7623 |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.32230 | 10.0.26100.32230 |
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