The following code is for security research and authorized testing only.
python
# PoC for CVE-2026-26143: Microsoft PowerShell Security Feature Bypass
# Description: Demonstrates how improper input validation can lead to a security bypass.
function Invoke-CVE202626143 {
param (
[string]$UserInput
)
# Simulating the vulnerable scenario where input is not strictly validated
# The attacker crafts input that includes escape characters or logical bypasses
if ($UserInput -match "--bypass-check") {
Write-Host "[+] Security check bypassed via crafted input."
# In a real exploit, this would execute restricted code
Start-Process powershell.exe -ArgumentList "/c echo 'Restricted Command Executed'"
} else {
Write-Host "[-] Normal execution flow."
}
}
# Example usage
Invoke-CVE202626143 -UserInput "normal_data"
Invoke-CVE202626143 -UserInput "--bypass-check"