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CVE-2026-20456

Quick assessment

Affected
MediaTek, Inc. MediaTek chipset
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MediaTek Chipsets是中国联发科（MediaTek）公司的一系列芯片。 MediaTek Chipsets存在安全漏洞，该漏洞源于缺少边界检查，可能导致本地拒绝服务，需要用户执行权限。

AI Predicted 5.5 Difficulty: Easy EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 6

VendorProduct Version RangeStatus
MediaTek, Inc. MediaTek chipset MT7902 affected
MT7920 affected
MT7921 affected
MT7922 affected
MT7925 affected
MT7927 affected
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I. Basic Information for CVE-2026-20456

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
MediaTek Chipsets 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MediaTek Chipsets是中国联发科（MediaTek）公司的一系列芯片。 MediaTek Chipsets存在安全漏洞，该漏洞源于缺少边界检查，可能导致本地拒绝服务，需要用户执行权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MediaTek, Inc. MediaTek chipset MT7902 -

II. Public POCs for CVE-2026-20456

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III. Intelligence Information for CVE-2026-20456

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Vendor Advisories for CVE-2026-20456 (1)

Same Patch Batch · MediaTek, Inc. · 2026-06-01 · 5 CVEs total

CVE-2026-20452 MediaTek Chipsets 安全漏洞
CVE-2026-20453 MediaTek Chipsets 安全漏洞
CVE-2026-20454 MediaTek Chipsets 安全漏洞
CVE-2026-20455 MediaTek Chipsets 安全漏洞

IV. Related Vulnerabilities

Same product: MediaTek chipset
Same vendor: MediaTek, Inc.
Same weakness: CWE-787

V. Comments for CVE-2026-20456

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