CVE-2025-59287

9.8 CRITICAL CISA KEV - Actively Exploited

Published: October 14, 2025 Modified: November 12, 2025

Description

Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287

Source: secure@microsoft.com

Vendor Advisory

https://hawktrace.com/blog/CVE-2025-59287

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Third Party Advisory

https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/

Source: af854a3a-2127-422b-91ae-364da2661108

Press/Media Coverage

https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service

Source: af854a3a-2127-422b-91ae-364da2661108

Mitigation Third Party Advisory

https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Third Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Third Party Advisory US Government Resource

7 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

75.4%

99th percentile

Exploitation Status

Actively Exploited

Remediation due: 2025-11-14

Weaknesses (CWE)

CWE-502

Affected Vendors

microsoft

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