CVE-2025-59287

critical-risk
Published 2025-10-14

Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

Do I need to act?

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75.7% chance of exploitation in next 30 days
EPSS score — higher than 24% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (7)

Affected Vendors

Microsoft

References (7)

Vendor Advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287
Exploit https://hawktrace.com/blog/CVE-2025-59287
Press/Media Coverage https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows...
Third Party Advisory https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulne...
Mitigation https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vuln...
Third Party Advisory https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951
Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-...
73
/ 100
critical-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 14/34 · Moderate