CVE-2026-105016

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

Score

CVSS 3.1 9.8 Critical

Status

Undergoing Analysis - secure@microsoft.com

Published

2026-10-13

Last modified

2026-10-28

Weaknesses

CWE-122

Affected products

• .net (Microsoft)
• Microsoft Visual Studio 2026 Version 18.10 (Microsoft)
• Visual Studio 2022 (Microsoft)
• Windows 11 23H2 (Microsoft)
• Windows 11 24H2 (Microsoft)
• Windows 11 25H2 (Microsoft)
• Windows 11 26H1 (Microsoft)
• Windows 11 Version 26h2 For Arm64-based Systems (Microsoft)
• Windows Server 2022 (Microsoft)
• Windows Server 2025 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105016