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CRITICAL · 9.8

CVE-2025-20634

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution, if a UE has connected to a rogue base station controlled by the attacker, wit...

Vulnerability Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution, 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: MOLY01289384; Issue ID: MSV-2436.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MediatekNr16-
MediatekNr17-
MediatekNr17R-
MediatekMt2737-
MediatekMt6813-
MediatekMt6835-
MediatekMt6835T-
MediatekMt6878-
MediatekMt6878M-
MediatekMt6879-
MediatekMt6886-
MediatekMt6895-
MediatekMt6895Tt-
MediatekMt6896-
MediatekMt6897-
MediatekMt6899-
MediatekMt6980-
MediatekMt6980D-
MediatekMt6983-
MediatekMt6983T-

Related Weaknesses (CWE)

CWE-787

References

FAQ

What is CVE-2025-20634?

CVE-2025-20634 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution, if a UE has connected to a rogue base station controlled by the attacker, wit...

How severe is CVE-2025-20634?

CVE-2025-20634 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-20634?

Check the references section above for vendor advisories and patch information. Affected products include: Mediatek Nr16, Mediatek Nr17, Mediatek Nr17R, Mediatek Mt2737, Mediatek Mt6813.