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9.8 Critical

CVE-2026-105016 Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network

Description

Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

Affected products and versions

Product Affected versions Fixed in
.NET 10.0 10.0 10.0.0 → < 10.0.14 10.0.14
.NET 11.0 11.0 earliest → < 11.0.0-rc.2.26504.105 11.0.0-rc.2.26504.105
.NET 8.0 8.0 8.0.0 → < 8.0.32 8.0.32
.NET 9.0 9.0 9.0.0 → < 9.0.21 9.0.21
Microsoft Visual Studio 2022 version 17.14 17.14 17.14.0 → < 17.14.42 17.14.42
Microsoft Visual Studio 2026 version 18.10 18.10 18.10.0 → < 18.10.4 18.10.4
Windows 11 Version 23H2 10.0 10.0.22631.0 → < 10.0.22631.7652 10.0.22631.7652
Windows 11 Version 24H2 10.0 10.0.26100.0 → < 10.0.26100.9711 10.0.26100.9711
Windows 11 Version 25H2 10.0 10.0.26200.0 → < 10.0.26200.9711 10.0.26200.9711
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Product Affected versions Fixed in
Windows 11 version 26H1 10.0 10.0.28000.0 → < 10.0.28000.3231 10.0.28000.3231
Windows 11 Version 26H2 10.0 10.0.26300.0 → < 10.0.26300.9711 10.0.26300.9711
Windows Server 2022 10.0 10.0.20348.0 → < 10.0.20348.5761 10.0.20348.5761
Windows Server 2025 10.0 10.0.26100.0 → < 10.0.26100.33650 10.0.26100.33650
Windows Server 2025 (Server Core installation) 10.0 10.0.26100.0 → < 10.0.26100.33650 10.0.26100.33650
.NET 10.0 runtime 10.0 10.0.0 → < 10.0.14 10.0.14
.NET 11.0 runtime 11.0 earliest → < 11.0.0-rc.2.26504.105 11.0.0-rc.2.26504.105
.NET 8.0 runtime 8.0 8.0.0 → < 8.0.32 8.0.32
.NET 9.0 runtime 9.0 9.0.0 → < 9.0.21 9.0.21

References

Timeline

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