Security Vulnerability Report
中文
CVE-2025-20750 CVSS 6.5 MEDIUM

CVE-2025-20750

Published: 2025-12-02 03:16:16
Last Modified: 2026-02-17 15:16:09

Description

In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01661199; Issue ID: MSV-4296.

CVSS Details

CVSS Score
6.5
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:h:mediatek:mt6833p:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:h:mediatek:mt6853t:-:*:*:*:*:*:*:* - NOT VULNERABLE
MediaTek Modem firmware < MOLY01661199 patch
使用MSV-4296问题标识的调制解调器固件版本

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
# CVE-2025-20750 PoC - Rogue Base Station Attack # Note: This is a conceptual demonstration for security research purposes only # Actual exploitation requires specialized RF equipment and telecom protocol knowledge import os class RogueBaseStation: def __init__(self): self.supported_bands = [1, 3, 5, 7, 8, 20, 28, 40] self.pci = 100 # Physical Cell ID self.tac = 0x0001 # Tracking Area Code def craft_malicious_signal(self): """ Craft malicious signal payload with malformed RRC messages to trigger input validation vulnerability in MediaTek modem """ # Malformed RRC Connection Reconfiguration message # with invalid input parameters malicious_payload = { 'msg_type': 'RRC_CONNECTION_RECONFIGURATION', 'rrc_transaction_id': 0xFF, # Invalid value 'mobility_control_info': { 'carrier_freq': 0xFFFF, # Out of range 'physical_config_dedicated': 'MALFORMED_DATA' }, 'meas_config': { 'meas_id_to_add_mod_list': 'OVERFLOW_DATA' } } return malicious_payload def broadcast_malicious_sib(self): """ Broadcast malformed System Information Blocks to trigger parsing vulnerabilities """ sib_payload = { 'sib_type': 1, 'cell_access_related_info': { 'tac': self.tac, 'cell_id': 0xFFFFFFFFFFFFFFFF # Invalid cell ID } } return sib_payload def trigger_crash(self): """ Send crafted NAS messages to trigger denial of service """ nas_messages = [ 'ATTACH_REQUEST_WITH_INVALID_IMEISV', 'TAU_REQUEST_WITH_MALFORMED_GUTI', 'SERVICE_REQUEST_WITH_INVALID_SEQUENCE' ] return nas_messages # Usage example if __name__ == '__main__': rbs = RogueBaseStation() print('[+] Initiating rogue base station attack for CVE-2025-20750') print('[+] Broadcasting malicious signals...') payload = rbs.craft_malicious_signal() sib = rbs.broadcast_malicious_sib() print(f'[*] Payload crafted: {payload}') print('[*] Target: MediaTek Modem with unpatched firmware') print('[*] Expected result: Modem crash/denial of service')

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2025-20750", "sourceIdentifier": "[email protected]", "published": "2025-12-02T03:16:16.057", "lastModified": "2026-02-17T15:16:08.647", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01661199; Issue ID: MSV-4296."}, {"lang": "es", "value": "En el Módem, existe una posible caída del sistema debido a una validación de entrada incorrecta. Esto podría conducir a una denegación de servicio remota, si un UE se ha conectado a una estación base maliciosa controlada por el atacante, sin necesidad de privilegios de ejecución adicionales. No se necesita interacción del usuario para la explotación. ID del parche: MOLY01661199; ID del problema: MSV-4296."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-476"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:*", "matchCriteriaId": "E30A2D2E-6A72-4070-A471-EEE75F7D07F2"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*", "matchCriteriaId": "7F1D09FC-5BE9-4B23-82F1-3C6EAC5711A6"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*", "matchCriteriaId": "9814939B-F05E-4870-90C0-7C0F6BAAEB39"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6833p:-:*:*:*:*:*:*:*", "matchCriteriaId": "CB690F5A-9367-45D3-A53E-80BF60053630"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*", "matchCriteriaId": "366F1912-756B-443E-9962-224937DD7DFB"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6853t:-:*:*:*:*:*:*:*", "matchCriteriaId": "328DA6BE-1303-4646-89B7-2EC8DC444532"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*", "matchCriteriaId": "89AFEE24-7AAD-4EDB-8C3E-EDBA3240730A"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6855t:-:*:*:*:*:*:*:*", "matchCriteriaId": "083F6134-FF26-4F1B-9B77-971D342AF774"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6873:-:*:*:*:*:*:*:*", "matchCriteriaId": "F6B8A36E-C5FB-44AE-A1C3-50EBF4C68F6B"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6875:-:*:*:*:*:*:*:*", "matchCriteriaId": "80BDC5EC-E822-4BC7-8C0D-E8AD8396E8FE"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6875t:-:*:*:*:*:*:*:*", "matchCriteriaId": "F883C6D3-1724-4553-9EFC-3D204FF3CAA3"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*", "matchCriteriaId": "7CA9352F-E9BD-4656-9B7C-4AFEE2C78E58"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877t:-:*:*:*:*:*:*:*", "matchCriteriaId": "EFA54AA1-4E3A-44F8-A222-31C60F8F81DA"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877tt:-:*:*:*:*:*:*:*", "matchCriteriaId": "5D4D6885-E18C-477F-8B6D-B9E84D9535E2"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:*", "matchCriteriaId": "68CF4A7A-3136-4C4C-A795-81323896BE11"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*", "matchCriteriaId": "15E2EC3F-9FB3-488B-B1C1-2793A416C755"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*", "matchCriteriaId": "DD64413C-C774-4C4F-9551-89E1AA9469EE"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*", "matchCriteriaId": "3B787DC3-8E5A-4968-B20B-37B6257FAAE2"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*", "matchCriteriaId": "171D1C08-F055-44C0-913C-AA2B73AF5B72"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6891:-:*:*:*:*:*:*:*", "matchCriteriaId": "D8E91CA4-CA5B-40D1-9A96-2B875104BCF4"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*", "matchCriteriaId": "213B5C7F-D965-4312-9CDF-4F06FA77D401"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8675:-:*:*:*:*:*:*:*", "matchCriteriaId": "03E6123A-7603-4EAB-AFFB-229E8A040709"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8771:-:*:*:*:*:*:*:*", "matchCriteriaId": "0D09F23D-D023-4A ... 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