EUVD-2026-73284
GHSA-hqvj-9g3m-fxp4
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
DHCP is an unauthenticated UDP protocol accessible to any network client, justifying AV:N/PR:N; out-of-bounds read causes only a crash, so C:N and I:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
AnalysisAI
Out-of-bounds read (CWE-125) in the Windows DHCP Server service allows a remote unauthenticated attacker to crash the service over a network, resulting in denial of service for all DHCP-dependent clients on the affected segment. The vulnerability spans a wide range of Windows Server versions from 2012 through 2025, as well as Windows 10 1607 and 1809, and reflects Microsoft's own reporting (secure@microsoft.com). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Windows DHCP Server role must be installed and actively running on a supported-but-unpatched Windows Server or Windows 10 host. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (score 7.5) accurately characterizes the threat: DHCP is a trust-less protocol by design, so no authentication is required, and the low complexity means exploitation requires only a crafted DHCP packet. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released cumulative updates that bring affected builds to their respective patched versions: Windows Server 2025/2025 Core to 10.0.26100.33438 or later, Windows Server 2022 to 10.0.20348.5622 or later, Windows Server 2019/2019 Core and Windows 10 1809 to 10.0.17763.9245 or later, Windows Server 2016/2016 Core and Windows 10 1607 to 10.0.14393.9512 or later, Windows Server 2012 R2/2012 R2 Core to 6.3.9600.23397 or later, and Windows Server 2012/2012 Core to 6.2.9200.26349 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server and Windows 10 systems running DHCP services, prioritizing production infrastructure and critical business segments. …
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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