CVE-2026-83677
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Memory Leak in Windows DHCP Client Allows DoS

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description
Missing release of memory after effective lifetime in Windows DHCP Client allows an unauthorized attacker to deny service over a network.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-14
EPSS Evaluated
N/A
NVD
CVE-2026-83677
EUVD
EUVD-2026-99945

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
Microsoft Windows 11 Version 24H2 10.0.26100.0
Microsoft Windows 11 Version 25H2 10.0.26200.0
Microsoft Windows 11 version 26H1 10.0.28000.0
Microsoft Windows 11 Version 26H2 10.0.26300.0
Microsoft Windows Server 2025 10.0.26100.0
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

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