CVE-2026-20423 Details
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.
A privilege escalation vulnerability has been identified in the WLAN STA driver of certain MediaTek chipsets. This issue arises from a possible out-of-bounds write caused by a missing bounds check, which could allow for local exploitation with user execution privileges. The vulnerability does not require user interaction to be exploited.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://corp.mediatek.com/product-security-bulletin/March-2026 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-749 | Exposed Dangerous Method or Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mediatek nbiot sdk | <= 3.8 |
CPE
Remediation
| |
| mediatek mt7902 | All versions |
CPE
Remediation
| |
| mediatek mt7920 | All versions |
CPE
Remediation
| |
| mediatek mt7921 | All versions |
CPE
Remediation
| |
| mediatek mt7922 | All versions |
CPE
Remediation
| |
| mediatek mt7925 | All versions |
CPE
Remediation
| |
| mediatek mt7927 | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 3, 2026 | CVE Modified | CISA-ADP |
| Mar 3, 2026 | Initial Analysis | [email protected] |
| Mar 2, 2026 | CVE Modified | CISA-ADP |
| Mar 2, 2026 | New CVE Received | [email protected] |