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MEDIUM · 6.5

CVE-2026-20449

In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no...

Vulnerability Description

In Modem, there is a possible system crash due to a heap buffer overflow. 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: MOLY01760138; Issue ID: MSV-6148.

CVSS Score

6.5

MEDIUM

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

Affected Products

VendorProductVersions
MediatekMt6763 Firmware-
MediatekMt6763-
MediatekMt6765 Firmware-
MediatekMt6765-
MediatekMt6767 Firmware-
MediatekMt6767-
MediatekMt6768 Firmware-
MediatekMt6768-
MediatekMt6769 Firmware-
MediatekMt6769-
MediatekMt6771 Firmware-
MediatekMt6771-
MediatekMt6779 Firmware-
MediatekMt6779-
MediatekMt6781 Firmware-
MediatekMt6781-
MediatekMt6783 Firmware-
MediatekMt6783-
MediatekMt6785 Firmware-
MediatekMt6785-

Related Weaknesses (CWE)

CWE-120

References

FAQ

What is CVE-2026-20449?

CVE-2026-20449 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no...

How severe is CVE-2026-20449?

CVE-2026-20449 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-20449?

Check the references section above for vendor advisories and patch information. Affected products include: Mediatek Mt6763 Firmware, Mediatek Mt6763, Mediatek Mt6765 Firmware, Mediatek Mt6765, Mediatek Mt6767 Firmware.