high7.8
CVE-2026-20864
Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.
Impact
Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows 10 1809 | before 10.0.17763.8276 |
| Microsoft | Windows 10 21h2 | before 10.0.19044.6809 |
| Microsoft | Windows 10 22h2 | before 10.0.19045.6809 |
| Microsoft | Windows 11 23h2 | before 10.0.22631.6491 |
| Microsoft | Windows 11 24h2 | before 10.0.26100.7623 |
| Microsoft | Windows 11 25h2 | before 10.0.26200.7623 |
| Microsoft | Windows Server 2019 | before 10.0.17763.8276 |
| Microsoft | Windows Server 2022 | before 10.0.20348.4648 |
| Microsoft | Windows Server 2022 23h2 | before 10.0.25398.2092 |
| Microsoft | Windows Server 2025 | before 10.0.26100.32230 |
Weakness classification
References
- NVD record
- CVE.org record
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20864
- https://www.vicarius.io/vsociety/posts/cve-2026-20864-detection-script-heap-based-buffer-overflow-in-windows-connected-devices-platform-service
- https://www.vicarius.io/vsociety/posts/cve-2026-20864-mitigation-script-heap-based-buffer-overflow-in-windows-connected-devices-platform-service