Remote Denial of Service Vulnerability in MediaTek Modem Products
CVE-2025-20666

7.5HIGH

Key Information:

Vendor

MediaTek
Status
Mt2735, Mt6833, Mt6833p, Mt6853, Mt6853t, Mt6855, Mt6855t, Mt6873, Mt6875, Mt6875t, Mt6877, Mt6877t, Mt6877tt, Mt6880, Mt6883, Mt6885, Mt6889, Mt6890, Mt6891, Mt6893, Mt8666, Mt8667, Mt8673, Mt8675, Mt8771, Mt8791, Mt8791t, Mt8795t, Mt8797, Mt8798
Vendor
CVE Published:
5 May 2025

What is CVE-2025-20666?

A vulnerability exists in MediaTek's modem products that can result in a system crash when an unhandled exception occurs. This situation arises when a user equipment (UE) connects to a malicious base station controlled by an attacker. Exploitation of this vulnerability does not require user interaction, making it particularly concerning. The issue has been documented under Issue ID MSV-2933 and requires patching to prevent potential disruptions in service.

Affected Version(s)

MT2735, MT6833, MT6833P, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8666, MT8667, MT8673, MT8675, MT8771, MT8791, MT8791T, MT8795T, MT8797, MT8798 Modem NR15

References

https://corp.mediatek.com/product-security-bulletin/May-2025

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.