critical9.8
CVE-2026-105016
Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Impact
Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Microsoft.Native.Quic.MsQuic.Schannel | = 2.5.11-ci.156755675 | 2.5.11-ci.159417053 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows 11 Version 25H2 | from 10.0.26200.0 before 10.0.26200.9711 |
| Microsoft | .NET 10.0 Runtime | from 10.0.0 before 10.0.14 |
| Microsoft | Windows Server 2022 | from 10.0.20348.0 before 10.0.20348.5761 |
| Microsoft | Windows 11 Version 26H2 | from 10.0.26300.0 before 10.0.26300.9711 |
| Microsoft | .NET 9.0 Runtime | from 9.0.0 before 9.0.21 |
| Microsoft | Windows 11 Version 23H2 | from 10.0.22631.0 before 10.0.22631.7652 |
| Microsoft | .NET 8.0 Runtime | from 8.0.0 before 8.0.32 |
| Microsoft | Windows Server 2025 (Server Core Installation) | from 10.0.26100.0 before 10.0.26100.33650 |
| 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 | Microsoft Visual Studio 2026 Version 18.10 | from 18.10.0 before 18.10.4 |
| Microsoft | Microsoft Visual Studio 2022 Version 17.14 | from 17.14.0 before 17.14.42 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-5gjq-3f94-rcf7
- https://github.com/dotnet/runtime/security/advisories/GHSA-5gjq-3f94-rcf7
- https://github.com/dotnet/announcements/issues/446
- https://github.com/dotnet/runtime/issues/135695
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105016