EUVD-2026-73674
GHSA-c26w-rrg2-m7rc
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible WDS service requires low-privilege auth (PR:L); AC:H reflects heap-manipulation prerequisites for use-after-free; full CIA from successful code execution with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Deployment Services allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Windows Deployment Services (WDS) via a use-after-free memory corruption flaw allows a low-privileged, network-accessible attacker to execute arbitrary code on affected Windows Server installations. Microsoft confirmed the vulnerability across Windows Server 2012 through 2025 and select Windows 10 builds, with patched build versions identified for each release. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold at least low-privilege authenticated access to the network environment (PR:L - vendor describes this as an 'authorized attacker'), meaning fully unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 score captures the dual reality of this vulnerability: the C:H/I:H/A:H triad confirms that successful exploitation yields complete system compromise, yet AC:H and PR:L meaningfully constrain the attacker population. … 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 security update via Windows Update, WSUS, or Microsoft Update Catalog, targeting the patched build numbers confirmed in the EUVD data: Windows Server 2025 must reach build 10.0.26100.33438 or later, Windows Server 2022 must reach 10.0.20348.5622 or later, Windows Server 2019 and Windows 10 1809 must reach 10.0.17763.9245 or later, Windows Server 2016 and Windows 10 1607 must reach 10.0.14393.9512 or later, Windows Server 2012 R2 must reach 6.3.9600.23397 or later, and Windows Server 2012 must reach 6.2.9200.26349 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all Windows Deployment Services instances across your Windows Server 2012-2025 and qualifying Windows 10 environments to establish patching scope. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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