Remote Denial of Service Vulnerability in MediaTek Modem
CVE-2025-20756

5.3MEDIUM

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, Mt8673, Mt8675, Mt8676, Mt8678, Mt8755, Mt8771, Mt8791, Mt8791t, Mt8792, Mt8793, Mt8795t, Mt8797, Mt8798, Mt8863, Mt8873, Mt8883, Mt8893
Vendor
CVE Published:
2 December 2025

What is CVE-2025-20756?

A logic error in MediaTek's Modem can result in a potential system crash when a user endpoint connects to a maliciously controlled base station. This vulnerability allows an attacker to execute a remote denial of service attack without requiring any additional execution privileges or user interaction, making it particularly concerning for users connected to rogue networks. Prompt remediation is crucial to safeguard against exploitation and interruptions in service.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

MT2735, MT6833, MT6833P, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 Modem NR15

References

https://corp.mediatek.com/product-security-bulletin/Decem...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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