9.8
Critical
CVE-2026-62815 Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network
Description
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 11 Version 23H2 10.0 | 10.0.22631.0 → < 10.0.22631.7517 | 10.0.22631.7517 |
| Windows 11 Version 24H2 10.0 | 10.0.26100.0 → < 10.0.26100.9168 | 10.0.26100.9168 |
| Windows 11 Version 25H2 10.0 | 10.0.26200.0 → < 10.0.26200.9168 | 10.0.26200.9168 |
| Windows 11 version 26H1 10.0 | 10.0.28000.0 → < 10.0.28000.2704 | 10.0.28000.2704 |
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.5499 | 10.0.20348.5499 |
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.33296 | 10.0.26100.33296 |
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.33296 | 10.0.26100.33296 |
References
- Microsoft QUIC Remote Code Execution Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
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