high7.8
CVE-2026-20837
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
Impact
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code 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 |