CVE-2025-59287 — Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
CVE-2025-59287: Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Windows |
| Date added | 2025-10-24 |
| Due date | 2025-11-14 |
| Ransomware campaign use | Unknown |
Description
Microsoft Windows Server Update Service (WSUS) contains a deserialization of untrusted data vulnerability that allows for remote code execution.
Required action (CISA)
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
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59287
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog