CRITICAL CISA KEV

CVE-2025-59287

CVSS v3

9.8

CRITICAL

EPSS Score

100.0 %

exploit probability, as of 2026-10-03

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

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

CISA Known Exploited Vulnerability

Date Added: 2025-10-24
Patch Due Date: 2025-11-14
Ransomware Use: Unknown

Technical details

Published: 2025-10-14

Frequently asked questions

What is CVE-2025-59287?

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

Is CVE-2025-59287 actively exploited?

Yes. CVE-2025-59287 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-11-14.

What is the CVSS score for CVE-2025-59287?

CVE-2025-59287 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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