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8.8 High

CVE-2026-62823 Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent…

Description

Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent network.

Affected products and versions

Product Affected versions Fixed in
Windows 10 Version 1607 10.0 10.0.14393.0 → < 10.0.14393.9418 10.0.14393.9418
Windows 10 Version 1809 10.0 10.0.17763.0 → < 10.0.17763.9121 10.0.17763.9121
Windows Server 2012 6.2 6.2.9200.0 → < 6.2.9200.26280 6.2.9200.26280
Windows Server 2012 (Server Core installation) 6.2 6.2.9200.0 → < 6.2.9200.26280 6.2.9200.26280
Windows Server 2012 R2 6.3 6.3.9600.0 → < 6.3.9600.23338 6.3.9600.23338
Windows Server 2012 R2 (Server Core installation) 6.3 6.3.9600.0 → < 6.3.9600.23338 6.3.9600.23338
Windows Server 2016 10.0 10.0.14393.0 → < 10.0.14393.9418 10.0.14393.9418
Windows Server 2016 (Server Core installation) 10.0 10.0.14393.0 → < 10.0.14393.9418 10.0.14393.9418
Windows Server 2019 10.0 10.0.17763.0 → < 10.0.17763.9121 10.0.17763.9121
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Product Affected versions Fixed in
Windows Server 2019 (Server Core installation) 10.0 10.0.17763.0 → < 10.0.17763.9121 10.0.17763.9121
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

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