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HIGH · 7.8

CVE-2026-20423

In wlan STA driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is n...

Vulnerability Description

In wlan STA driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00465314; Issue ID: MSV-4956.

CVSS Score

7.8

HIGH

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

Affected Products

VendorProductVersions
MediatekNbiot Sdk<= 3.8
MediatekMt7902-
MediatekMt7920-
MediatekMt7921-
MediatekMt7922-
MediatekMt7925-
MediatekMt7927-

Related Weaknesses (CWE)

CWE-749CWE-787

References

FAQ

What is CVE-2026-20423?

CVE-2026-20423 is a vulnerability with a CVSS score of 7.8 (HIGH). In wlan STA driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is n...

How severe is CVE-2026-20423?

CVE-2026-20423 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-20423?

Check the references section above for vendor advisories and patch information. Affected products include: Mediatek Nbiot Sdk, Mediatek Mt7902, Mediatek Mt7920, Mediatek Mt7921, Mediatek Mt7922.