CVE-2025-59287
Windows Server Update Service (WSUS) Remote Code Execution Vulnerability
At a glance
- Severity
- CRITICAL 9.8
- Exploitation
- Known exploited (CISA KEV) · added 2025-10-24
Exploited per ENISA since 2025-10-24 - EPSS
- EPSS 99.98 % · percentile 100 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C | microsoft |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · secure@microsoft.com (Secondary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2025-34268
- GCVE · GCVE-0-2025-59287
CERT-FR advisories
- CERTFR-2025-AVI-0930 — Vulnérabilité dans Microsoft Windows Server Update Service · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0879 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*< 10.0.14393.8524cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*< 10.0.17763.7922cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*< 10.0.20348.4297cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*< 10.0.25398.1916cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*< 10.0.26100.6905
Affected products
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287
- https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287
- https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/
- https://hawktrace.com/blog/CVE-2025-59287
- https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service
- https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |