CVE-2026-105016

CriticalCVSS 9.8/10Last modified Oct 22, 2026

Description

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

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

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

References

Timeline

Published
Oct 13, 2026
Last modified
Oct 22, 2026
NVD status
Undergoing Analysis

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CVE-2026-105016: Critical severity, CVSS 9.8 | Vulnix