Deserialization in Microsoft Windows Server 2012
CVE-2025-59287
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
Vulnerability class: Insecure Deserialization
EPSS: 0.727 (98.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: 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.
Affected products
- Microsoft Windows Server 2012 — versions 6.2.9200.0
- Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
- Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.9600.0
- Microsoft Windows Server 2012 (Server Core Installation) — versions 6.2.9200.0
- Microsoft Windows Server 2016 — versions 10.0.14393.0
- Microsoft Windows Server 2016 (Server Core Installation) — versions 10.0.14393.0
- Microsoft Windows Server 2019 — versions 10.0.17763.0
- Microsoft Windows Server 2019 (Server Core Installation) — versions 10.0.17763.0
- Microsoft Windows Server 2022 — versions 10.0.20348.0
- Microsoft Windows Server 2022, 23h2 Edition (Server Core Installation) — versions 10.0.25398.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
- M507/CVE-2025-59287-PoC
- LuemmelSec/CVE-2025-59287---WSUS-SCCM-RCE
- Adel-kaka-dz/cve-2025-59287
- Twodimensionalitylevelcrossing817/CVE-2025-59287
- salman5230/CVE-2025-59287
- swoon69/CVE-2025-59287-Exercise-Use
- ross-ns/WSUS-CVE-2025-59287
- gud425/gud425.github.io
- rapid7/metasploit-framework
- fkie-cad/nvd-json-data-feeds
References
- Windows Server Update Service (WSUS) Remote Code Execution Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2025-59287?
- CVE-2025-59287 is a critical-severity vulnerability in Microsoft Windows Server 2012, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-10-14.
- How severe is CVE-2025-59287?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-59287 known to be exploited?
- Yes. CVE-2025-59287 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-24), indicating it is being actively exploited. 10 public proof-of-concept repositories are indexed.