CVE-2026-20436 — Classic Buffer Overflow in Nbiot SDK

CWE-120 — Classic Buffer Overflow3 documents3 sources
Severity
6.7MEDIUMNVD
EPSS
0.0%
top 95.53%
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 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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5mediatek_inc/mediatek_chipset7 versions+6

🔴Vulnerability Details

2
CVEList
CVE-2026-20436: In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check↗2026-03-02
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GHSA
GHSA-8vhj-xqq3-893m: In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check↗2026-03-02
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CVE-2026-20436 — Classic Buffer Overflow in Nbiot SDK | cvebase