CRITICALCVSS 9.8Actively exploited · CISA KEV since 2025-10-24Vulnerability
CVE-2025-59287
Microsoft Windows Server Update Service (WSUS) contains a deserialization of untrusted data vulnerability that allows for remote code execution.
Properties
- Euvd product
- Windows Server 2022, 23H2 Edition (Server Core installation), Windows Server 2019, Windows Server 2012 R2 (Server Core installation), Windows Server 2012 R2, Windows Server 2012, Windows Server 2025, Windows Server 2012 (Server Core installation), Windows Server 2016 (Server Core installation), Windows Server 2025 (Server Core installation), Windows Server 2019 (Server Core installation), Windows Server 2016, Windows Server 2022
- Vulnerability name
- Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
- First seen
- 2026-02-26T16:58:01+00:00
- Cvss score
- 9.8
- Epss score
- 0.9998
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2025-11-14
- Euvd assigner
- microsoft
- Retrieved at
- 2026-10-21T01:24:48+00:00
- Exploited euvd since
- 2025-10-24T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2025-10-24
- Euvd base score version
- 3.1
- Score
- 9.8
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- Microsoft
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 9.8
Related Entities (11)
AFFECTS_PRODUCT (7)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
MENTIONED_IN (1)
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