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Known Exploited Vulnerability
9.8
CRITICAL CVSS 3.1
CVE-2025-59287
Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability - [Actively Exploited]
Description

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

INFO

Published Date :

Oct. 14, 2025, 5:16 p.m.

Last Modified :

Nov. 12, 2025, 2:33 p.m.

Remotely Exploit :

No

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Microsoft Windows Server Update Service (WSUS) contains a deserialization of untrusted data vulnerability that allows for remote code execution.

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.

Notes :

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-59287 ; https://nvd.nist.gov/vuln/detail/CVE-2025-59287

Affected Products

The following products are affected by CVE-2025-59287 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_server_2012
2 Microsoft windows_server_2016
3 Microsoft windows_server_2019
4 Microsoft windows_server_2022
5 Microsoft windows_server_2022_23h2
6 Microsoft windows_server_23h2
7 Microsoft windows_server_2012_r2
8 Microsoft windows_server_2025
: Total Affected Vendor : 1 | Products : 8
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL f38d906d-7342-40ea-92c1-6c4a2c6478c8
CVSS 3.1 CRITICAL [email protected]
Solution
Update affected Windows Server Update Services installations.
  • Apply the latest security updates.
  • Restart affected services if required.
  • Verify update installation.
Public PoC/Exploit Available at Github

CVE-2025-59287 has a 40 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-59287.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287 Vendor Advisory
https://hawktrace.com/blog/CVE-2025-59287 Exploit Third Party Advisory
https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/ Press/Media Coverage
https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service Mitigation Third Party Advisory
https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951 Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287 Third Party Advisory US Government Resource
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-59287 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-59287 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
mormon-flyingsquad909/Find-WSUS

🧭 Identify WSUS server configurations across Group Policy Objects and hidden preferences, helping secure your infrastructure from potential exploits.

college-project coughacks hackathon nextjs python react web-scraping

PowerShell

Updated: 1 hour, 35 minutes ago
0 stars 0 fork 0 watcher
Born at : Nov. 23, 2025, 11:28 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Adel-kaka-dz/cve-2025-59287

None

Python

Updated: 2 days, 20 hours ago
1 stars 0 fork 0 watcher
Born at : Nov. 21, 2025, 1:36 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
neu-sec/powershell

Collection of Powershell scripts

PowerShell

Updated: 5 days, 2 hours ago
0 stars 0 fork 0 watcher
Born at : Nov. 19, 2025, 6:50 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
M507/CVE-2025-59287-PoC

Unauthenticated RCE PoC in Microsoft Windows Server Update Service (WSUS) - CVE-2025-59287 & CVE-2023-35317

cve-2023-35317 cve-2025-59287

Python

Updated: 4 days, 18 hours ago
2 stars 0 fork 0 watcher
Born at : Nov. 16, 2025, 8:10 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
Twodimensionalitylevelcrossing817/CVE-2025-59287

None

cve cve-2025-59287 cybersecurity exploit rce vulnerability windows windows-update wsus-vulnerability

Updated: 4 days, 21 hours ago
1 stars 0 fork 0 watcher
Born at : Nov. 15, 2025, 12:21 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
N3k0t-dev/PoC-CVE-collection

Comprehensive Proof of Concept collection for CVE-2025-11953, CVE-2025-59287, CVE-2025-8941 with exploitation frameworks in Python, C, Bash, PowerShell

Shell Python

Updated: 1 week, 6 days ago
0 stars 1 fork 1 watcher
Born at : Nov. 10, 2025, 10:09 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
crondenice/CVE-2025-59287

CVE-2025-59287 WSUS RCE Exploit

Python

Updated: 2 weeks, 3 days ago
1 stars 0 fork 0 watcher
Born at : Nov. 6, 2025, 10:56 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Chelsea486MHz/honeylake

Honeypot collection

Dockerfile Python Shell HTML

Updated: 1 week, 6 days ago
0 stars 0 fork 0 watcher
Born at : Nov. 6, 2025, 12:59 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
th1n0/CVE-2025-59287

WSUS vulnerability PoC

cve-2025-59287

Python

Updated: 1 week, 2 days ago
67 stars 30 fork 30 watcher
Born at : Nov. 4, 2025, 6:38 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
ekomsSavior/Cerberus

Cerberus-CVE Assessment Situation

Python

Updated: 2 weeks, 6 days ago
1 stars 0 fork 0 watcher
Born at : Nov. 3, 2025, 7:46 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
dexterm300/cve-2025-59287-exploit-poc

Exploitation proof-of-concept for CVE-2025-59287 - a critical vulnerability in the Windows Server Update Service (WSUS) caused by the deserialization of untrusted data. This flaw allows an unauthorized attacker to execute arbitrary code over a network, posing a significant security risk.

C# Batchfile Python

Updated: 2 weeks, 6 days ago
0 stars 0 fork 0 watcher
Born at : Nov. 3, 2025, 10:51 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Sid6Effect/CVE-2025-59287

WSUS vulnerability PoC

cve-2025-59287 wsus-vulnerability

Python

Updated: 2 weeks, 6 days ago
210 stars 65 fork 65 watcher
Born at : Nov. 2, 2025, 1:56 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
QurtiDev/WSUS-CVE-2025-59287-RCE

Exploit script written in C# to aid gaining a reverse shell on targets with Windows Server Update Service(WSUS) CVE-2025-59287.

cve-2025-59287 exploit wsus-vulnerability cve vulnerability windows

C#

Updated: 2 weeks, 2 days ago
3 stars 2 fork 2 watcher
Born at : Nov. 1, 2025, 8:05 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
0x7556/CVE-2025-59287

CVE-2025-59287 注入WolfShell内存马

Updated: 2 weeks, 4 days ago
1 stars 2 fork 2 watcher
Born at : Oct. 30, 2025, 1:38 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
Rali0s/wsman-guardian

Passive observation and analysis of WS-Man / CIM (SOAP over HTTP/HTTPS) traffic for defensive detection, host-network correlation, and incident triage. No offensive capabilities in mainline; lab-only features must be explicitly gated.

Python Shell PowerShell

Updated: 3 weeks, 4 days ago
0 stars 0 fork 0 watcher
Born at : Oct. 29, 2025, 10:42 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-59287 vulnerability anywhere in the article.

  • The Hacker News
ShadowPad Malware Actively Exploits WSUS Vulnerability for Full System Access

Nov 24, 2025Ravie LakshmananMalware / Vulnerability A recently patched security flaw in Microsoft Windows Server Update Services (WSUS) has been exploited by threat actors to distribute malware know ... Read more

Published Date: Nov 24, 2025 (2 hours, 6 minutes ago)
  • The Hacker News
Matrix Push C2 Uses Browser Notifications for Fileless, Cross-Platform Phishing Attacks

Bad actors are leveraging browser notifications as a vector for phishing attacks to distribute malicious links by means of a new command-and-control (C2) platform called Matrix Push C2. "This browser- ... Read more

Published Date: Nov 22, 2025 (2 days, 2 hours ago)
  • CybersecurityNews
Chinese Hackers Exploiting WSUS Remote Code Execution Vulnerability to Deploy ShadowPad Malware

Chinese-backed attackers have begun weaponizing a critical vulnerability in Microsoft Windows Server Update Services (WSUS) to distribute ShadowPad, a sophisticated backdoor malware linked to multiple ... Read more

Published Date: Nov 21, 2025 (2 days, 17 hours ago)
  • Huntress
Velociraptor WSUS Exploitation, Pt. I: WSUS-Up?

In November, Huntress analysts detected an incident where threat actors likely exploited a recently patched remote code execution vulnerability in Windows Server Update Services (WSUS). After gaining ... Read more

Published Date: Nov 20, 2025 (3 days, 18 hours ago)
  • The Cyber Express
Microsoft Patch Tuesday November 2025: Fixes 63 Security Flaws and One Zero-Day Exploit

Microsoft’s November Patch Tuesday release for 2025 has delivered fixes for 63 security flaws across its software portfolio, including one zero-day vulnerability already being exploited in the wild. T ... Read more

Published Date: Nov 12, 2025 (1 week, 5 days ago)
  • Help Net Security
November 2025 Patch Tuesday forecast: Windows Exchange Server EOL?

October 2025 Patch Tuesday was one for the record books in so many ways. There was a big push by Microsoft to fix as many open vulnerabilities as possible in products that were reaching end-of-life (E ... Read more

Published Date: Nov 07, 2025 (2 weeks, 3 days ago)
  • The Cyber Express
Apple Rolls Out iOS 26.1 and iPadOS 26.1 With Critical Security Fixes

Apple has released a new round of security updates for its mobile platforms, introducing iOS 26.1 and iPadOS 26.1. The latest Apple security updates are available for a wide range of devices. iPhone m ... Read more

Published Date: Nov 04, 2025 (2 weeks, 5 days ago)
  • CybersecurityNews
Hackers Actively Scanning for TCP Port 8530/8531 Linked to WSUS Vulnerability CVE-2025-59287

Cybersecurity researchers and firewall monitoring services have detected a dramatic surge in reconnaissance activity targeting Windows Server Update Services (WSUS) infrastructure. Network sensors col ... Read more

Published Date: Nov 04, 2025 (2 weeks, 6 days ago)
  • CybersecurityNews
Apple Patches Multiple Critical Vulnerabilities in iOS 26.1 and iPadOS 26.1

Apple released iOS 26.1 and iPadOS 26.1, addressing multiple vulnerabilities that could lead to privacy breaches, app crashes, and potential data leaks for iPhone and iPad users. The update targets de ... Read more

Published Date: Nov 04, 2025 (2 weeks, 6 days ago)
  • CybersecurityNews
Microsoft Patch for WSUS Vulnerability has Broken Hotpatching on Windows Server 2025

In a recent setback for Windows administrators, Microsoft’s October 2025 security update addressing a critical vulnerability in Windows Server Update Services (WSUS) has inadvertently broken hotpatchi ... Read more

Published Date: Nov 03, 2025 (2 weeks, 6 days ago)
  • BleepingComputer
Microsoft: Patch for WSUS flaw disabled Windows Server hotpatching

An out-of-band (OOB) security update that patches an actively exploited Windows Server Update Service (WSUS) vulnerability has broken hotpatching on some Windows Server 2025 devices. KB5070881, the em ... Read more

Published Date: Nov 03, 2025 (2 weeks, 6 days ago)
  • Help Net Security
Week in review: WSUS vulnerability exploited to drop Skuld infostealer, PoC for BIND 9 DNS flaw published

Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Can your earbuds recognize you? Researchers are working on it Biometric authentication has moved from ... Read more

Published Date: Nov 02, 2025 (3 weeks, 1 day ago)
  • CybersecurityNews
Hackers Exploiting Windows Server Update Services Flaw to Steal Sensitive Data from Organizations

Windows Server Update Services (WSUS) vulnerability is actively exploited in the wild. Criminals are using this vulnerability to steal sensitive data from organizations in various industries. The vuln ... Read more

Published Date: Nov 01, 2025 (3 weeks, 2 days ago)
  • Ars Technica
Two Windows vulnerabilities, one a 0-day, are under active exploitation

Two Windows vulnerabilities—one a zero-day that has been known to attackers since 2017 and the other a critical flaw that Microsoft initially tried and failed to patch recently—are under active exploi ... Read more

Published Date: Oct 31, 2025 (3 weeks, 2 days ago)
  • Help Net Security
Unpatched Windows vulnerability continues to be exploited by APTs (CVE-2025-9491)

A Windows vulnerability (CVE-2025-9491, aka ZDI-CAN-25373) that state-sponsored threat actors and cybercrime groups have been quietly leveraging since at least 2017 continues to be exploited for attac ... Read more

Published Date: Oct 31, 2025 (3 weeks, 2 days ago)
  • hackread.com
Hackers Exploit WSUS Flaw to Spread Skuld Stealer Despite Microsoft Patch

A vulnerability in the Windows Server Update Service (WSUS) is being actively exploited by cybercriminals to plant Skuld  Staler malware, according to new research from the cybersecurity firm Darktrac ... Read more

Published Date: Oct 31, 2025 (3 weeks, 2 days ago)
  • Help Net Security
CISA and partners take action as Microsoft Exchange security risks mount

In partnership with international cybersecurity agencies, the US Cybersecurity and Infrastructure Security Agency (CISA) and the National Security Agency (NSA) outlined security best practices for org ... Read more

Published Date: Oct 31, 2025 (3 weeks, 2 days ago)
  • The Hacker News
CISA and NSA Issue Urgent Guidance to Secure WSUS and Microsoft Exchange Servers

Oct 31, 2025Ravie LakshmananVulnerability / Threat Intelligence The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and National Security Agency (NSA), along with international partner ... Read more

Published Date: Oct 31, 2025 (3 weeks, 3 days ago)
  • Help Net Security
Attackers exploiting WSUS vulnerability drop Skuld infostealer (CVE-2025-59287)

Attackers have been spotted exploiting the recently patched WSUS vulnerability (CVE-2025-59287) to deploy infostealer malware on unpatched Windows servers. An out-of-band update Last week’s release of ... Read more

Published Date: Oct 30, 2025 (3 weeks, 3 days ago)
  • security.nl
VS verzoekt organisaties om op kwetsbare Windows-servers te controleren

Het cyberagentschap van de Amerikaanse overheid heeft organisaties opgeroepen om op kwetsbare Windows-servers te controleren. Aanleiding is actief misbruik van een kritieke kwetsbaarheid in de Windows ... Read more

Published Date: Oct 30, 2025 (3 weeks, 4 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-59287 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Nov. 12, 2025

    Action Type Old Value New Value
    Added Reference Type CVE: https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service Types: Third Party Advisory
    Added Reference Type CVE: https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service Types: Mitigation, Third Party Advisory
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 11, 2025

    Action Type Old Value New Value
    Added Reference https://www.vicarius.io/vsociety/posts/cve-2025-59287-detection-script-rce-vulnerability-in-windows-server-update-service
    Added Reference https://www.vicarius.io/vsociety/posts/cve-2025-59287-mitigation-script-rce-vulnerability-in-windows-server-update-service
  • Modified Analysis by [email protected]

    Oct. 28, 2025

    Action Type Old Value New Value
    Added Reference Type CVE: https://hawktrace.com/blog/CVE-2025-59287 Types: Exploit, Third Party Advisory
    Added Reference Type CVE: https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/ Types: Press/Media Coverage
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Oct. 27, 2025

    Action Type Old Value New Value
    Added Reference https://hawktrace.com/blog/CVE-2025-59287
    Added Reference https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-windows-server-wsus-flaw-exploited-in-attacks/
  • Initial Analysis by [email protected]

    Oct. 27, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.8524 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.7922 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.4297 *cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.25398.1916 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.6905
    Added Reference Type CISA-ADP: https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951 Types: Third Party Advisory
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287 Types: Vendor Advisory
    Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287 Types: Third Party Advisory, US Government Resource
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Oct. 25, 2025

    Action Type Old Value New Value
    Added Date Added 2025-10-24
    Added Due Date 2025-11-14
    Added 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.
    Added Vulnerability Name Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 24, 2025

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59287
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 20, 2025

    Action Type Old Value New Value
    Added Reference https://gist.github.com/hawktrace/880b54fb9c07ddb028baaae401bd3951
  • New CVE Received by [email protected]

    Oct. 14, 2025

    Action Type Old Value New Value
    Added Description Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-502
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact