Vulnerability Intelligence Report
Windows Server Update Service (WSUS) Remote Code Execution Vulnerability
CVE-2025-59287
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:99.96%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-502 ↗CWE-502: Deserialization of Untrusted Data
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Windows Server 2012 | 6.2.9200.0 < 6.2.9200.25728 (affected) |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 < 6.2.9200.25728 (affected) |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 < 6.3.9600.22826 (affected) |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 < 6.3.9600.22826 (affected) |
| Microsoft | Windows Server 2016 | 10.0.14393.0 < 10.0.14393.8524 (affected) |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 < 10.0.14393.8524 (affected) |
| Microsoft | Windows Server 2019 | 10.0.17763.0 < 10.0.17763.7922 (affected) |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 < 10.0.17763.7922 (affected) |
| Microsoft | Windows Server 2022 | 10.0.20348.0 < 10.0.20348.4297 (affected) |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 < 10.0.25398.1916 (affected) |
| Microsoft | Windows Server 2025 | 10.0.26100.0 < 10.0.26100.6905 (affected) |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 < 10.0.26100.6905 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
99.962%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2025-09-11T19:36:03 |
| Published | 2025-10-14T17:01:47 |
| Patch Date | 2025-10-14 |
| Last Updated | 2026-02-26T16:58:01 |
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