CVE-2026-100219: Microsoft QUIC Remote Code Execution Vulnerability
Published Oct 13, 2026
·Updated
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
26 affected componentsFixes available
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows 11 23h2<10.0.22631.7652
Microsoft Windows 11 23h2<10.0.22631.7652
Microsoft Windows 11 24h2<10.0.26100.9711
Microsoft Windows 11 24h2<10.0.26100.9711
Microsoft Windows 11 25h2<10.0.26200.9711
Microsoft Windows 11 25h2<10.0.26200.9711
Microsoft Windows 11 26h1<10.0.28000.3231
Microsoft Windows 11 26h1<10.0.28000.3231
Microsoft Windows 11 26h2<10.0.26300.9711
Microsoft Windows 11 26h2<10.0.26300.9711
Microsoft Windows Server 2022<10.0.20348.5761
Microsoft Windows Server 2025<10.0.26100.33650
Microsoft Windows 11=23H2, >=10.0.22631<10.0.22631.7652
10.0.22631.7652
Microsoft Windows 11=26H1, >=10.0.28000<10.0.28000.3231
10.0.28000.3231
Microsoft Windows 11=25H2, >=10.0.26200<10.0.26200.9711
10.0.26200.9711
Microsoft Windows 11=26H2, >=10.0.26300<10.0.26300.9711
10.0.26300.9711
Microsoft Windows 11=23H2, >=10.0.22631<10.0.22631.7652
10.0.22631.7652
Microsoft Windows 11=26H2, >=10.0.26300<10.0.26300.9711
10.0.26300.9711
Microsoft Windows 11=26H1, >=10.0.28000<10.0.28000.3231
10.0.28000.3231
Microsoft Windows 11=25H2, >=10.0.26200<10.0.26200.9711
10.0.26200.9711
Microsoft Windows 11=24H2, >=10.0.26100<10.0.26100.9711
10.0.26100.9711
Microsoft Windows 11=24H2, >=10.0.26100<10.0.26100.9711
10.0.26100.9711
Remediation
Event History
Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·07:01 PM
Data Sourced
via MITRE·07:01 PM
DescriptionSeverity
Data Sourced
via NVD·07:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Which systems are identified as affected?
The affected software listed is Microsoft Windows 11, Microsoft Windows Server 2022, and Microsoft Windows Server 2025.
2
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.
3
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.