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CVE-2025-59287

99
FAUCET Score

CVE-2025-59287 is a critical deserialization vulnerability in Windows Server Update Service (WSUS) affecting multiple Windows Server versions. This flaw allows an unauthenticated attacker to execute arbitrary code remotely over the network with no user interaction. Rated 9.8 CRITICAL, it carries the highest potential impact for confidentiality, integrity, and availability. The vulnerability is actively exploited, with public exploit modules available and significant community discussion, including a CISA directive for federal agencies to patch.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
r2CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
< 10.0.14393.8524CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
< 10.0.17763.7922CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
< 10.0.20348.4297CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
99.86%
Probability of exploitation in next 30 days
EPSS Percentile
100.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Oct 24, 2025
Metasploit: Windows Server Update Service Deserialization Remote Code Execution · Oct 14, 2025
Nuclei: CVE-2025-59287 · Oct 29, 2025
This CVE's current EPSS score of 0.9986 is in the 100th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (14)

microsoftpatch availablevia msrc
Product: Windows Server 2012 R2 (Server Core installation)Fixed in: 6.3.9600.22826
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2019Fixed in: 10.0.17763.7922
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2019 (Server Core installation)Fixed in: 10.0.17763.7922
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2022Fixed in: 10.0.20348.4297
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2022 (Server Core installation)Fixed in: 10.0.20348.4297
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2025 (Server Core installation)Fixed in: 10.0.26100.6905
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2025Fixed in: 10.0.26100.6905
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2022, 23H2 Edition (Server Core installation)Fixed in: 10.0.25398.1916
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2016Fixed in: 10.0.14393.8524
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2016 (Server Core installation)Fixed in: 10.0.14393.8524
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012Fixed in: 6.2.9200.25728
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012 (Server Core installation)Fixed in: 6.2.9200.25728
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2012 R2Fixed in: 6.3.9600.22826
View patch
microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2025-Oct/CVE-2025-59287Critical

Windows Server Update Service (WSUS) Remote Code Execution Vulnerability

Oct 14, 2025

References

gist.github.com / hawktrace/880b54fb9c07ddb028baaae401bd3951
Third Party Advisory
cisa.gov / known-exploited-vulnerabilities-catalog
Third Party AdvisoryUS Government Resource
hawktrace.com / blog/CVE-2025-59287
ExploitThird Party Advisory
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
MitigationThird Party Advisory
msrc.microsoft.com / update-guide/vulnerability/CVE-2025-59287
Vendor Advisory