EUVD-2026-73277
GHSA-p9jf-pf48-fh29
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-accessible DHCP service requires no authentication; CWE-125 read-only crash yields no confidentiality or integrity impact, only availability loss.
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
Unauthenticated remote denial-of-service in the Windows DHCP Server role allows network-accessible attackers to crash the DHCP service by sending malformed packets that trigger an out-of-bounds read (CWE-125). Affected versions span Windows Server 2012 through Windows Server 2025, all requiring the DHCP Server role to be installed and running. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Windows DHCP Server role must be explicitly installed and running on the target system - this role is not enabled by default on any Windows installation and must be deliberately provisioned by an administrator. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) is well-calibrated: any attacker with network access to UDP port 67 can crash the DHCP service without authentication or user interaction, at low complexity. … 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 Microsoft's Patch Tuesday update for each affected Windows Server version: Server 2012 to build 6.2.9200.26349 or later, Server 2012 R2 to 6.3.9600.23397 or later, Server 2016 to 10.0.14393.9512 or later, Server 2019 to 10.0.17763.9245 or later, Server 2022 to 10.0.20348.5622 or later, and Server 2025 to 10.0.26100.33438 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server systems running the DHCP Server role across versions 2012-2025 and assess criticality to network operations. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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