High · published April 14, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
| Product | Versions | Fixed in |
|---|---|---|
| microsoft/windows_10_1607 | < 10.0.14393.9060 | 10.0.14393.9060 |
| microsoft/windows_10_1607 | < 10.0.14393.9060 | 10.0.14393.9060 |
| microsoft/windows_10_1809 | < 10.0.17763.8644 | 10.0.17763.8644 |
| microsoft/windows_10_1809 | < 10.0.17763.8644 | 10.0.17763.8644 |
| microsoft/windows_10_21h2 | < 10.0.19044.7184 | 10.0.19044.7184 |
| microsoft/windows_10_21h2 | < 10.0.19044.7184 | 10.0.19044.7184 |
| microsoft/windows_10_21h2 | < 10.0.19044.7184 | 10.0.19044.7184 |
| microsoft/windows_10_22h2 | < 10.0.19045.7184 | 10.0.19045.7184 |
| microsoft/windows_10_22h2 | < 10.0.19045.7184 | 10.0.19045.7184 |
| microsoft/windows_10_22h2 | < 10.0.19045.7184 | 10.0.19045.7184 |
| microsoft/windows_11_23h2 | < 10.0.22631.6936 | 10.0.22631.6936 |
| microsoft/windows_11_23h2 | < 10.0.22631.6936 | 10.0.22631.6936 |
| microsoft/windows_11_24h2 | < 10.0.26100.8246 | 10.0.26100.8246 |
| microsoft/windows_11_24h2 | < 10.0.26100.8246 | 10.0.26100.8246 |
| microsoft/windows_11_25h2 | < 10.0.26200.8246 | 10.0.26200.8246 |
| microsoft/windows_11_25h2 | < 10.0.26200.8246 | 10.0.26200.8246 |
| microsoft/windows_11_26h1 | < 10.0.28000.1836 | 10.0.28000.1836 |
| microsoft/windows_11_26h1 | < 10.0.28000.1836 | 10.0.28000.1836 |
| microsoft/windows_server_2012 | all versions | — |
| microsoft/windows_server_2012 | all versions | — |
| microsoft/windows_server_2016 | < 10.0.14393.9060 | 10.0.14393.9060 |
| microsoft/windows_server_2019 | < 10.0.17763.8644 | 10.0.17763.8644 |
| microsoft/windows_server_2022 | < 10.0.20348.5020 | 10.0.20348.5020 |
| microsoft/windows_server_2022_23h2 | < 10.0.25398.2274 | 10.0.25398.2274 |
| microsoft/windows_server_2025 | < 10.0.26100.32690 | 10.0.26100.32690 |