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MEDIUM · 5.5

CVE-2026-20456

In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for...

Vulnerability Description

In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.

CVSS Score

5.5

MEDIUM

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

Affected Products

VendorProductVersions
MediatekMt7902 Firmware-
MediatekMt7902-
MediatekMt7920 Firmware-
MediatekMt7920-
MediatekMt7921 Firmware-
MediatekMt7921-
MediatekMt7922 Firmware-
MediatekMt7922-
MediatekMt7925 Firmware-
MediatekMt7925-
MediatekMt7927 Firmware-
MediatekMt7927-

Related Weaknesses (CWE)

CWE-787

References

FAQ

What is CVE-2026-20456?

CVE-2026-20456 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for...

How severe is CVE-2026-20456?

CVE-2026-20456 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-20456?

Check the references section above for vendor advisories and patch information. Affected products include: Mediatek Mt7902 Firmware, Mediatek Mt7902, Mediatek Mt7920 Firmware, Mediatek Mt7920, Mediatek Mt7921 Firmware.