CVE-2026-20423 — Exposed Dangerous Method or Function in Nbiot SDK

CWE-749 — Exposed Dangerous Method or FunctionCWE-787 — Out-of-bounds Write3 documents3 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 97.67%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mediatek Nbiot SDKMediatek INC Mediatek Chipset
Timeline
PublishedMar 2

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 vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5mediatek_inc/mediatek_chipset6 versions+5

🔴Vulnerability Details

2
GHSA
GHSA-5pr4-qmc6-fvxj: In wlan STA driver, there is a possible out of bounds write due to a missing bounds check↗2026-03-02
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CVEList
CVE-2026-20423: In wlan STA driver, there is a possible out of bounds write due to a missing bounds check↗2026-03-02
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CVE-2026-20423 — Exposed Dangerous Method or Function | cvebase