CVE-2025-59287

CRITICAL KEV RANSOMWARE NUCLEI LAB

Windows Server 2012, 2016, 2019, 2022, 2025 - Unauthenticated RCE via Deserialization

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-59287 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added October 24, 2025, with confirmed use in ransomware campaigns. EIP tracks 25 public exploits from researchers including jiansiting, Lupovis, garvitv14, including a Metasploit module exploits/windows/http/wsus_deserialization_rce. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2025-59287, targeting unsafe deserialization in Microsoft Windows Server Update Services (WSUS). The exploit leverages AES-128-CBC decryption and BinaryFormatter deserialization to achieve remote code execution with SYSTEM privileges.

Description

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

Exploits (25)

github WORKING POC 169 stars
by jiansiting · pythonremote
https://github.com/jiansiting/CVE-2025-59287

This repository contains a functional exploit for CVE-2025-59287, targeting unsafe deserialization in Microsoft Windows Server Update Services (WSUS). The exploit leverages AES-128-CBC decryption and BinaryFormatter deserialization to achieve remote code execution with SYSTEM privileges.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Server Update Services (WSUS)
Auth required
Prerequisites: WSUS server access · AES-128-CBC encryption key
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WRITEUP 26 stars
by Lupovis · shellpoc
https://github.com/Lupovis/Honeypot-for-CVE-2025-59287-WSUS

This repository provides a defensive honeypot for CVE-2025-59287, emulating WSUS endpoints to capture and analyze attacker activity. It includes a Flask-based capture service, detection rules, and a Windows test harness for validation.

Classification
Writeup 95%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Isolated lab or segmented test environment · WSUS-like endpoints emulation
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC 14 stars
by garvitv14 · pythonremote
https://github.com/garvitv14/CVE-2025-59287

This repository contains a functional exploit for CVE-2025-59287, targeting a WSUS (Windows Server Update Services) vulnerability. The exploit automates the generation of a malicious .NET payload using ysoserial, encrypts it with a hardcoded AES key, and delivers it via a crafted SOAP request to achieve unauthenticated remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Network access to the WSUS server · ysoserial.NET for payload generation · .NET runtime (Wine, Mono, or Windows)
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC 12 stars
by tecxx · powershellremote
https://github.com/tecxx/CVE-2025-59287-WSUS

This repository contains a functional PowerShell exploit for CVE-2025-59287, targeting an unauthenticated RCE vulnerability in WSUS. The script automates the exploitation process by generating a malicious payload using ysoserial.net and triggering it via WSUS console interaction.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS) version 10.0.20348.1
No auth needed
Prerequisites: Unpatched WSUS server · Network access to WSUS server · Netcat listener for reverse shell
devstral-2 · analyzed Feb 19, 2026 Full analysis →
nomisec WORKING POC 7 stars
by M507 · poc
https://github.com/M507/CVE-2025-59287-PoC

This PoC exploits CVE-2025-59287, a deserialization vulnerability in Microsoft Windows Update Service (WSUS). It demonstrates unauthorized remote code execution by leveraging SOAP-based authentication bypass and crafted payloads.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Update Service (WSUS)
No auth needed
Prerequisites: Network access to vulnerable WSUS server · Python environment with required dependencies
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github WRITEUP 7 stars
by AdityaBhatt3010 · sqlpoc
https://github.com/AdityaBhatt3010/CVE-2025-59287-When-your-patch-server-becomes-the-attack-vector

This repository provides a detailed technical analysis of CVE-2025-59287, an unauthenticated RCE vulnerability in Windows Server Update Services (WSUS) due to unsafe deserialization. It includes IoCs, detection rules, and mitigation steps but does not contain functional exploit code.

Classification
Writeup 95%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Theoretical
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Network access to WSUS endpoints (TCP 8530/8531) · Vulnerable WSUS installation
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC 4 stars
by dexterm300 · pythonremote
https://github.com/dexterm300/cve-2025-59287-exploit-poc

This repository contains a functional exploit for CVE-2025-59287, a critical RCE vulnerability in Microsoft WSUS due to unsafe deserialization in the BinaryFormatter component. The exploit includes a C# payload generator and Python scripts to encrypt and deliver the payload via the GetCookie() endpoint.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Access to WSUS server (port 8530/8531) · Python environment with dependencies · .NET Framework for payload generation
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC 4 stars
by mrk336 · remote
https://github.com/mrk336/Breaking-the-Update-Chain-Inside-CVE-2025-59287-and-the-WSUS-RCE-Threat

The repository contains a functional PowerShell exploit for CVE-2025-59287, a critical RCE vulnerability in Windows Server Update Services (WSUS) due to unsafe deserialization. It includes a detailed technical writeup, an XML payload, and a PowerShell script to generate and upload the malicious payload to a vulnerable WSUS server.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS) on Windows Server 2012-2025
No auth needed
Prerequisites: Network connectivity to the target WSUS server · Ability to upload files via HTTP PUT
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC 3 stars
by QurtiDev · c#remote
https://github.com/QurtiDev/WSUS-CVE-2025-59287-RCE

This repository contains a functional exploit for CVE-2025-59287, a critical remote code execution vulnerability in Microsoft Windows Server Update Services (WSUS). The exploit leverages insecure deserialization in the GetCookie() endpoint to achieve unauthenticated RCE with SYSTEM privileges.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Target WSUS server URL · Attacker-controlled IP and port for reverse shell
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC 2 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2025/CVE-2025-59287

This repository contains a functional exploit PoC for CVE-2025-59287, targeting a deserialization vulnerability in Microsoft Windows Update Service (WSUS). The exploit chain involves authentication cookie retrieval, server ID extraction, and crafted SOAP requests to trigger deserialization for potential RCE.

Classification
Working Poc 95%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Update Service (WSUS)
No auth needed
Prerequisites: Network access to WSUS server · SOAP endpoint availability
devstral-2 · analyzed Feb 27, 2026 Full analysis →
nomisec WORKING POC 1 stars
by LuemmelSec · remote
https://github.com/LuemmelSec/CVE-2025-59287---WSUS-SCCM-RCE

This PoC exploits a deserialization vulnerability in WSUS/SCCM via crafted SOAP requests, leveraging ysoserial.net to generate malicious payloads for remote code execution. It automates authentication, cookie retrieval, and payload delivery to trigger RCE.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft WSUS/SCCM (version unspecified)
No auth needed
Prerequisites: Network access to WSUS/SCCM server · ysoserial.net for payload generation
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 1 stars
by Adel-kaka-dz · remote
https://github.com/Adel-kaka-dz/cve-2025-59287

This repository contains a Python-based exploit for CVE-2025-59287, targeting a remote code execution vulnerability in Windows Server Update Services (WSUS). It includes modules for payload encryption and exploitation, with support for both legacy and secure encryption modes.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Network access to vulnerable WSUS server · Python environment with required dependencies
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github WORKING POC 1 stars
by GhoStZA-debug · poc
https://github.com/GhoStZA-debug/PoC-CVE-collection

This repository contains a functional exploit for CVE-2025-11953, a critical OS command injection vulnerability in React Native Community CLI Metro Development Server. The exploit includes both basic and advanced payloads, demonstrating arbitrary command execution via the unsanitized 'open-url' endpoint.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: React Native Community CLI (react-native-community/cli-server-api) versions 4.8.0 to 20.0.0-alpha.2
No auth needed
Prerequisites: Metro server running and accessible on port 8081
devstral-2 · analyzed May 01, 2026 Full analysis →
github WORKING POC 1 stars
by N3k0t-dev · pythonpoc
https://github.com/N3k0t-dev/PoC-CVE-collection

The repository contains a functional exploit for CVE-2025-11953, a critical OS command injection vulnerability in React Native Community CLI Metro Development Server. It includes both basic and advanced exploitation scripts, demonstrating arbitrary command execution via the unsanitized `open-url` endpoint.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: react-native-community/cli-server-api (4.8.0 - 20.0.0-alpha.2)
No auth needed
Prerequisites: Access to the Metro Development Server on port 8081 · Network connectivity to the target
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github NO CODE 1 stars
by fsanzmoya · pythonpoc
https://github.com/fsanzmoya/wsus_CVE-2025-59287
nomisec WORKING POC
by swoon69 · remote
https://github.com/swoon69/CVE-2025-59287-Exercise-Use

This repository contains a functional exploit chain for CVE-2025-59287, targeting WSUS servers via deserialization. It includes scripts to check vulnerability, generate payloads (file drop or reverse shell), and deliver the exploit.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Server Update Services (WSUS)
No auth needed
Prerequisites: ysoserial.exe for payload generation · network access to WSUS server
devstral-2 · analyzed Mar 09, 2026 Full analysis →
nomisec TROJAN
by vatslaaeytoygag · poc
https://github.com/vatslaaeytoygag/CVE-2025-59287

The repository contains obfuscated code in `encrypt.py` that attempts to execute malicious commands via subprocess, disguised as a WSUS exploit toolkit. The README lacks technical details about CVE-2025-59287 and instead provides generic installation instructions.

Classification
Trojan 95%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: WSUS (Windows Server Update Services)
No auth needed
Prerequisites: Network access to target WSUS server
devstral-2 · analyzed Feb 20, 2026 Full analysis →
github WORKING POC
by ross-ns · powershellremote
https://github.com/ross-ns/WSUS-CVE-2025-59287

This repository contains a functional PowerShell exploit for CVE-2025-59287, targeting a deserialization vulnerability in WSUS. The script generates a reverse shell payload, retrieves necessary cookies, and triggers the exploit via crafted SOAP requests.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Network access to WSUS server · ysoserial.exe for payload generation
devstral-2 · analyzed Feb 19, 2026 Full analysis →
nomisec TROJAN
by salman5230 · poc
https://github.com/salman5230/CVE-2025-59287

The repository claims to be a PoC for CVE-2025-59287 but contains obfuscated code that downloads and executes a malicious payload. The README misleadingly describes a booklist management tool while the code initializes a hidden process to fetch and run a remote script.

Classification
Trojan 95%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: Unspecified (likely a decoy)
No auth needed
Prerequisites: Victim must run the script
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP
by gud425 · remote
https://github.com/gud425/gud425.github.io

This is a detailed technical analysis of CVE-2025-59287, a deserialization vulnerability in Microsoft WSUS. The writeup includes root cause analysis, affected versions, and a breakdown of the vulnerable `DecryptData()` function.

Classification
Writeup 100%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Network access to WSUS server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github WORKING POC
by 0xBruno · c#remote
https://github.com/0xBruno/WSUSploit.NET

This repository contains a functional exploit for CVE-2025-59287, targeting WSUS servers via deserialization of a malicious payload. The exploit crafts a serialized object with embedded XAML to achieve remote code execution on vulnerable systems.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Access to WSUS server endpoint · WSUS server vulnerable to deserialization attack
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC
by FurkanKAYAPINAR · pythonremote
https://github.com/FurkanKAYAPINAR/CVE-2025-59287

This repository contains a functional exploit for CVE-2025-59287, targeting a WSUS XML deserialization vulnerability to achieve remote code execution. The exploit chains multiple SOAP endpoints to authenticate and deliver a malicious payload via a crafted XML event.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows Server Update Services (WSUS)
Auth required
Prerequisites: Network access to WSUS server · WSUS service exposed and vulnerable
devstral-2 · analyzed Feb 19, 2026 Full analysis →
github WORKING POC
by DaddyBigFish · pythonpoc
https://github.com/DaddyBigFish/CVE-2025-59287-hawktrace

This Python script exploits CVE-2025-59287 by leveraging SOAP-based authentication and deserialization to achieve remote code execution (RCE) on a vulnerable target. It constructs malicious SOAP requests to trigger the vulnerability in the target software.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft SoftwareDistribution Server (likely WSUS)
No auth needed
Prerequisites: Network access to the target server · SOAP endpoints exposed
devstral-2 · analyzed May 17, 2026 Full analysis →
metasploit WORKING POC GREAT
by mwulftange, msutovsky-r7 · rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/wsus_deserialization_rce.rb

This Metasploit module exploits a deserialization vulnerability in Windows Server Update Services (WSUS) to achieve remote code execution. It leverages SOAP requests to trigger unsafe deserialization, executing payloads in an administrator context.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Windows Server Update Services (WSUS)
No auth needed
Prerequisites: Network access to WSUS server · WSUS service running on default port 8530
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Windows Server Update Service - Insecure Deserialization
CRITICALVERIFIEDby pussycat0x,princechaddha
Shodan: cpe:"cpe:2.3:o:microsoft:windows_server_2012"

Scores

CVSS v3 9.8
EPSS 0.6623
EPSS Percentile 98.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable yes
Technical Impact total

Details

CISA KEV 2025-10-24
VulnCheck KEV 2025-10-24
ENISA EUVD EUVD-2025-34268
Ransomware Use Confirmed
CWE
CWE-502
Status published
Products (7)
microsoft/windows_server_2012
microsoft/windows_server_2012 r2
microsoft/windows_server_2016 < 10.0.14393.8524
microsoft/windows_server_2019 < 10.0.17763.7922
microsoft/windows_server_2022 < 10.0.20348.4297
microsoft/windows_server_2022_23h2 < 10.0.25398.1916
microsoft/windows_server_2025 < 10.0.26100.6905
Published Oct 14, 2025
KEV Added Oct 24, 2025
Tracked Since Feb 18, 2026