EUVD-2026-73423
GHSA-g43c-3f4q-5x6j
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
DHCP server processes packets autonomously; UI:R in provided vector is inconsistent with daemon behavior, assessed as UI:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Windows DHCP Server results from a CWE-190 integer overflow that an unauthenticated network attacker can trigger to achieve full code execution on affected systems. The flaw spans Windows Server editions from 2012 through 2025 and select Windows 10 builds, placing a large swath of enterprise infrastructure at risk. …
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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 running on the target system - this role is not enabled by default on standard Windows Server installations and must be explicitly configured. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 base score reflects a network-reachable, low-complexity attack requiring no privileges, with full confidentiality, integrity, and availability impact - a serious signal on its own. … 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 update corresponding to the installed Windows Server version as published in MSRC at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69266 - fixed builds are Server 2012 ≥6.2.9200.26349, Server 2012 R2 ≥6.3.9600.23397, Server 2016 ≥10.0.14393.9512, Server 2019 ≥10.0.17763.9245, Server 2022 ≥10.0.20348.5622, and Server 2025 ≥10.0.26100.33438. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all Windows Server 2012-2025 and Windows 10 systems running DHCP Server roles across your infrastructure using asset management tools; consult Microsoft Security Response Center (MSRC) for the exact affected builds and patch details. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today