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MicrosoftCVE-2026-62716

Microsoft Windows DHCP Server: integer overflow

Medium6.5CVE-2026-62716 · Published Aug 11, 2026 · updated Sep 2, 2026

Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.

Microsoft advisory

Affected versions

PackageAffectedFixed in
Windows Server 2012
Product
>= 6.2.9200.0, < 6.2.9200.262806.2.9200.26280
Windows Server 2012 (Server Core installation)
Product
>= 6.2.9200.0, < 6.2.9200.262806.2.9200.26280
Windows Server 2012 R2
Product
>= 6.3.9600.0, < 6.3.9600.233386.3.9600.23338
Windows Server 2012 R2 (Server Core installation)
Product
>= 6.3.9600.0, < 6.3.9600.233386.3.9600.23338
Windows Server 2016
Product
>= 10.0.14393.0, < 10.0.14393.941810.0.14393.9418
Windows Server 2016 (Server Core installation)
Product
>= 10.0.14393.0, < 10.0.14393.941810.0.14393.9418
Windows Server 2019
Product
>= 10.0.17763.0, < 10.0.17763.912110.0.17763.9121
Windows Server 2019 (Server Core installation)
Product
>= 10.0.17763.0, < 10.0.17763.912110.0.17763.9121
Windows Server 2022
Product
>= 10.0.20348.0, < 10.0.20348.549910.0.20348.5499
Windows Server 2025
Product
>= 10.0.26100.0, < 10.0.26100.3329610.0.26100.33296
Windows Server 2025 (Server Core installation)
Product
>= 10.0.26100.0, < 10.0.26100.3329610.0.26100.33296
Details and references
CVSS 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-125, CWE-191

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