CVE-2025-59287
critical · 9.8Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Added 2025-10-24Remediation due 2025-11-14
A public exploit / detection template exists
Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
9.8
CVSS
100.0%
EPSS (exploit prob.)
100th
EPSS percentile
2025-10-14
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-502
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | windows_server_2012 | all versions |
| 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 |
Check a specific version with /api/v1/cve/match.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287
- https://hawktrace.com/blog/CVE-2025-59287
- https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/
- 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
- https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2025-59287