CVE-2025-59287

Published Oct 14, 2025

Last updated 3 months ago

Windows Server Update Service

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-59287 is a remote code execution vulnerability affecting the Windows Server Update Service (WSUS). The vulnerability stems from the deserialization of untrusted data within WSUS. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted event that triggers unsafe object deserialization within a legacy serialization mechanism. Successful exploitation allows the attacker to execute arbitrary code on the target system.

Description: Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
Source: secure@microsoft.com
NVD status: Analyzed
Products: windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2022_23h2, windows_server_2025

Risk scores

CVSS 3.1

Type: Secondary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
Exploit added on: Oct 24, 2025
Exploit action due: Nov 14, 2025
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

secure@microsoft.com: CWE-502

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E"
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "7200EF9B-2689-4E9E-BE9E-E00836A7D284",
            "versionEndExcluding": "10.0.14393.8524"
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "D9DDF9BE-8D0B-4027-B3F7-FFD96438E3EB",
            "versionEndExcluding": "10.0.17763.7922"
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "BDAC36D7-54A0-456B-B176-17A0B9E63C7A",
            "versionEndExcluding": "10.0.20348.4297"
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "FBA85BFD-9802-452E-97B1-6380554EF254",
            "versionEndExcluding": "10.0.25398.1916"
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "2E5FFF5B-8745-47F6-A0B7-262AA43353BB",
            "versionEndExcluding": "10.0.26100.6905"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.