CVE-2026-100219: Microsoft QUIC Remote Code Execution Vulnerability
Microsoft QUIC Remote Code Execution Vulnerability
Other sources
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655
Event History
Frequently Asked Questions
Which systems are identified as affected?
The affected software listed is Microsoft Windows 11, Microsoft Windows Server 2022, and Microsoft Windows Server 2025.
Does exploitation require authentication or user interaction?
No. The vector is network-based, with low attack complexity, no privileges required, and no user interaction required.
What level of impact could successful exploitation have?
Successful exploitation could allow remote code execution and is rated as having high confidentiality, integrity, and availability impact.