EUVD-2026-73490
GHSA-rcpq-5hxq-5829
Severity by source
AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Adjacent network access and low-privilege authorization required per description; impact is availability-only memory exhaustion with no confidentiality or integrity effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Missing release of memory after effective lifetime in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.
AnalysisAI
Memory exhaustion in Windows DHCP Server enables an authorized attacker on the adjacent network to crash or degrade the DHCP service via repeated triggering of a CWE-401 memory leak. The vulnerability affects the Windows Server DHCP Server role across Windows Server 2012 through 2025, including Server Core installations. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be present on the same network segment as the Windows DHCP Server (AV:A - same subnet, VLAN, or adjacent broadcast domain; not exploitable from the internet). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 5.7 (Medium) accurately reflects the constrained threat model: AV:A limits attacker reach to the local network segment, and PR:L (authorized attacker per the description) requires some level of network authentication or credential. … 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 Microsoft security updates that bring affected builds to or above the fixed build numbers confirmed by EUVD: Windows Server 2025 to 10.0.26100.33438, Windows Server 2022 to 10.0.20348.5622, Windows Server 2019/Windows 10 1809 to 10.0.17763.9245, Windows Server 2016/Windows 10 1607 to 10.0.14393.9512, Windows Server 2012 R2 to 6.3.9600.23397, and Windows Server 2012 to 6.2.9200.26349. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-401 – Memory Leak
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External POC / Exploit Code
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