CVEvulnerability

CVE-2025-59287

9.8 CRITICAL Known exploited Published 2025-10-14 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability — Microsoft Windows

Microsoft Windows Server Update Service (WSUS) contains a deserialization of untrusted data vulnerability that allows for remote code execution.

Added to KEV
2025-10-24
Remediation due
2025-11-14
Ransomware use
Unknown
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.
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-59287 ; https://nvd.nist.gov/vuln/detail/CVE-2025-59287
Status
Analyzed
Published
2025-10-14
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-502

Description

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

Affected configurations

• microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.8524) • microsoft windows server 2019 (< 10.0.17763.7922) • microsoft windows server 2022 (< 10.0.20348.4297) • microsoft windows server 2022 23h2 (< 10.0.25398.1916) • microsoft windows server 2025 (< 10.0.26100.6905)

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References