critical9.8
CVE-2026-83770
Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.
Impact
Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows Server 2012 | from 6.2.9200.0 before 6.2.9200.26434 |
| Microsoft | Windows 10 Version 22H2 | from 10.0.19045.0 before 10.0.19045.7807 |
| Microsoft | Windows Server 2012 (Server Core Installation) | from 6.2.9200.0 before 6.2.9200.26434 |
| Microsoft | Windows 10 Version 21H2 | from 10.0.19044.0 before 10.0.19044.7807 |
| Microsoft | Windows 10 Version 1607 | from 10.0.14393.0 before 10.0.14393.9612 |
| Microsoft | Windows 11 Version 25H2 | from 10.0.26200.0 before 10.0.26200.9711 |
| Microsoft | Windows 11 Version 23H2 | from 10.0.22631.0 before 10.0.22631.7652 |
| Microsoft | Windows Server 2012 R2 (Server Core Installation) | from 6.3.9600.0 before 6.3.9600.23470 |
| Microsoft | Windows Server 2019 | from 10.0.17763.0 before 10.0.17763.9376 |
| Microsoft | Windows 11 Version 24H2 | from 10.0.26100.0 before 10.0.26100.9711 |
| Microsoft | Windows Server 2025 | from 10.0.26100.0 before 10.0.26100.33650 |
| Microsoft | Windows Server 2022 | from 10.0.20348.0 before 10.0.20348.5761 |