Skip to main content
Live Webinar with SANS (June 25)— Agentic CTI Automation for Fun & ProfitRegister Free
Mallory
CriticalCISA KEVExploited in the wildPublic exploit

MS08-067 Windows Server Service Buffer Overflow

IdentifiersCVE-2008-4250CWE-120

CVE-2008-4250, also known as MS08-067 or the Server Service Vulnerability, is a stack-based buffer overflow in the Microsoft Windows Server service. A remote attacker can trigger the flaw by sending a specially crafted RPC request that causes an overflow during path canonicalization. The issue affects legacy Windows platforms including Windows 2000 SP4, Windows XP SP2/SP3, Windows Server 2003 SP1/SP2, Windows Vista Gold/SP1, Windows Server 2008, and Windows 7 Pre-Beta. The vulnerability is reachable over SMB/RPC and was exploited in the wild, including by the Conficker worm and Gimmiv.A malware.

Share:
For your environment

Are you exposed to this one?

Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.

ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows remote, unauthenticated arbitrary code execution in the context of the Server service, commonly resulting in SYSTEM-level execution. Impact includes full host compromise, malware deployment, wormable propagation, lateral movement across SMB-accessible systems, and complete loss of confidentiality, integrity, and availability on affected hosts.

Mitigation

If you can’t patch tonight, do this now.

Restrict or block access to SMB and related RPC exposure from untrusted networks, especially TCP ports 139 and 445. Limit lateral SMB reachability through host and network firewalls, segment legacy systems, and disable or isolate vulnerable systems where patching is unavailable. Follow Microsoft MS08-067 workaround guidance for affected environments.

Remediation

Patch, then assume compromise.

Apply the Microsoft security updates provided in Microsoft Security Bulletin MS08-067 on all affected systems. Because the affected products are legacy and in many cases end-of-life, organizations should also retire or replace unsupported Windows versions where patching is not feasible.
PUBLIC EXPLOITS

Exploits

3 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (5 hidden).

VALID 3 / 8 TOTALView more in app
ms08-067.pyMaturityPoCVerified exploit

This repository provides a modern Python implementation of the MS08-067 exploit (CVE-2008-4250), a critical remote code execution vulnerability in the Windows Server service (svchost.exe) accessible via SMB (port 445). The repository includes both detection scripts (src/ms08_067_check.py, src/ms08_067_check2.py) and exploit scripts (src/ms08_067_exploit.py, src/ms08_067_exploit2.py). The exploit scripts are designed to deliver a reverse TCP shell payload to the attacker's machine, requiring the user to generate and insert appropriate shellcode (e.g., using msfvenom). The code leverages the impacket and pwntools libraries for SMB/DCERPC communication and reverse shell handling, respectively. The exploit is operational and requires the attacker to specify the target IP, local host, and port for the reverse shell. The repository is well-structured, with a dedicated library for NDR encoding (src/lib/rex.py), and includes comprehensive legal and ethical disclaimers in the README. No hardcoded shellcode is present; the user must supply their own. The main attack vector is network-based, targeting SMB over TCP port 445. The exploit is not part of a larger framework but is a standalone operational exploit with detection and exploitation capabilities.

BinRacerDisclosed Sep 6, 2025pythonnetwork
ms08-067MaturityPoCFrameworkmetasploitVerified exploit

This repository provides a Metasploit module for exploiting the MS08-067 vulnerability (CVE-2008-4250) in the Microsoft Windows Server Service, specifically targeting Windows XP Professional SP1. The main exploit file is 'src/ms08_067_netapi_sp1.rb', a Ruby script conforming to Metasploit's module structure. It leverages the DCERPC interface over SMB (typically port 445) to send a specially crafted request that triggers a stack buffer overflow, allowing arbitrary code execution. The exploit is operational and allows the user to specify any compatible Metasploit payload, with the default being a reverse shell. The repository also includes a Metasploit resource script ('src/ms08_067.rc') to automate module setup and execution. The README provides detailed legal disclaimers, usage instructions, and emphasizes the need for explicit authorization before use. No hardcoded IPs or domains are present; the user must specify target and listener addresses. The exploit is intended for authorized penetration testing and educational purposes only.

BinRacerDisclosed Sep 6, 2025rubyshellnetwork
Exploit_MS08-067MaturityPoCVerified exploit

This repository contains an improved Python exploit for the MS08-067 vulnerability (CVE-2008-4250) affecting Microsoft Windows systems. The main file, Exploit_MS08-067.py, is a standalone exploit script that leverages the Impacket library to craft and send a malicious SMB packet to a target Windows machine, exploiting a buffer overflow in the Server service. The exploit allows the attacker to execute arbitrary shellcode on the target, with a default payload that opens a reverse shell to 192.168.119.204:62000. Users can supply their own shellcode via the -s option. The script supports multiple Windows versions (XP, 2000, 2003) and allows configuration of the target port (default 445, can be set to 139). The README.md provides detailed usage instructions, supported OS versions, troubleshooting tips, and ethical guidelines. The exploit is operational and suitable for penetration testing in authorized environments. No hardcoded C2 infrastructure is present; the attacker must specify their own callback IP and port in the shellcode.

NoTrustedxDisclosed Jun 2, 2025pythonnetwork
EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationWindows 2000operating_system
Microsoft CorporationWindows Server 2003operating_system
Microsoft CorporationWindows Server 2008operating_system
Microsoft CorporationWindows Vistaoperating_system
Microsoft CorporationWindows Xpoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware2

Malware families riding this exploit, with evidence and IOCs.

Detection signatures1

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity11

Community discussion across Reddit, Mastodon, and other social sources.