CVE-2025-59287 kev in the critical feed json
Windows Server Update Service (WSUS) Remote Code Execution Vulnerability
published 2025-10-14 12 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-34268
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2025-10-24
- epss
- 100.0%
- EPSS 100.0% chance of exploitation in 30 days, percentile 99.9%
- public exploits
- 1
- Metasploit, plus a Nuclei check
Summary
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
Patch / fix
cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Microsoft Windows Server 2012 6.2.9200.25728
- Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.25728
- Microsoft Windows Server 2012 R2 6.3.9600.22826
- Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.22826
- Microsoft Windows Server 2016 10.0.14393.8524
- Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.8524
- Microsoft Windows Server 2019 10.0.17763.7922
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.7922
- Microsoft Windows Server 2022 10.0.20348.4297
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1916
- Microsoft Windows Server 2025 10.0.26100.6905
- Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.6905
Timeline
- First public exploit (Metasploit exploit/windows/http/wsus_deserialization_rce)
- Published
- Added to CISA KEV
- CISA SSVC: exploitation active
- CISA patch deadline
Known exploited
- Added
- 12 mo ago
- Patch by
- 2025-11-14 (11 mo ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- Microsoft, Windows
- CISA name
- Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- total
- Assessed
- 12 mo ago
Exploit prediction
99.98% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/windows/http/wsus_deserialization_rce Windows Server Update Service Deserialization Remote Code Execution metasploit exploit, great rank, 2025-10-14
- Nuclei template Windows Server Update Service - Insecure Deserialization nuclei detection template
- gist.github.com https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951 referenced PoC, tagged "exploit" by a source, unverified
- hawktrace.com https://hawktrace.com/blog/CVE-2025-59287 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 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 |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 (Server Core installation)
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012 R2 (Server Core installation)
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core installation)
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-59287
vendor-advisory, patch
-
gist.github.com
/hawktrace/880b54fb9c07ddb028baaae401bd3951
exploit, third-party-advisory
-
hawktrace.com
/blog/CVE-2025-59287
exploit, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287
government-resource, third-party-advisory, us-government-resource
-
bleepingcomputer.com
/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/
press/media-coverage
-
vicarius.io
/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service
third-party-advisory
-
vicarius.io
/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service
mitigation, third-party-advisory
Sources
- CVE List CVE-2025-59287
- NVD CVE-2025-59287
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