KB5120233: CVEs fixed (Windows update (KB))

KB5120233 fixes 1 tracked CVE. Affected systems and fixed versions.

• CVE-2026-62815 CRITICAL 9.8 UPGRADE UPGRADE Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

Applies to

• Windows Server 2025 (Server Core installation) · fixed in 10.0.26100.33296

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