Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-20436

Severity CVSS v4.0:
Pending analysis
Type:
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Publication date:
02/03/2026
Last modified:
03/03/2026

Description

In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00473802; Issue ID: MSV-5970.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
6.70
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mediatek:nbiot_sdk:*:*:*:*:*:*:*:* 3.8 (including)
cpe:2.3:h:mediatek:mt7902:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt7920:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt7921:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt7922:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt7925:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt7927:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8696:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools