# CVE-2025-59287

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

- Page: https://www.vulneraibility.com/cve/CVE-2025-59287
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2025-10-24; CISA due date 2025-11-14
- EPSS: 99.98%
- Public exploit code: 1 Metasploit module · 23 GitHub proofs of concept · 1 Nuclei template (first 2025-10-25)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2025-10-25)
- Weakness: CWE-502
- Published: 2025-10-14

## Affected versions

- Microsoft Windows Server 2012: affected >= 6.2.9200.0 and < 6.2.9200.25728
- Microsoft Windows Server 2012 R2: affected >= 6.3.9600.0 and < 6.3.9600.22826
- Microsoft Windows Server 2012 R2 (Server Core installation): affected >= 6.3.9600.0 and < 6.3.9600.22826
- Microsoft Windows Server 2012 (Server Core installation): affected >= 6.2.9200.0 and < 6.2.9200.25728
- Microsoft Windows Server 2016: affected >= 10.0.14393.0 and < 10.0.14393.8524
- Microsoft Windows Server 2016 (Server Core installation): affected >= 10.0.14393.0 and < 10.0.14393.8524
- Microsoft Windows Server 2019: affected >= 10.0.17763.0 and < 10.0.17763.7922
- Microsoft Windows Server 2019 (Server Core installation): affected >= 10.0.17763.0 and < 10.0.17763.7922
- Microsoft Windows Server 2022: affected >= 10.0.20348.0 and < 10.0.20348.4297
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): affected >= 10.0.25398.0 and < 10.0.25398.1916
- Microsoft Windows Server 2025: affected >= 10.0.26100.0 and < 10.0.26100.6905
- Microsoft Windows Server 2025 (Server Core installation): affected >= 10.0.26100.0 and < 10.0.26100.6905

A version outside these ranges is not a statement that it is unaffected.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287
- [exploit] https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287
- [other] https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/
- [other] https://hawktrace.com/blog/CVE-2025-59287
- [other] https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service
- [other] https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.