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CVE-2026-20457

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 chipset是MediaTek公司的一款芯片组产品。 MediaTek chipset存在异常处理不当漏洞，该漏洞源于Modem组件中存在输入验证不当的问题，如果用户设备连接到攻击者控制的恶意基站，可能导致远程拒绝服务。以下版本受到影响：MT2735版本、MT2737版本、MT6739版本、MT6761版本、MT6762版本、MT6763版本、MT6765版本、MT6767版本、MT6768版本、MT6769版本、MT6771版本、MT6779版本、MT6781版本、MT6783版本、

AI Predicted 7.5 Difficulty: Moderate EPSS 0.29% · P19

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 59

VendorProduct Version RangeStatus
MediaTek, Inc. MediaTek chipset MT2735 affected
MT2737 affected
MT6739 affected
MT6761 affected
MT6762 affected
MT6763 affected
MT6765 affected
MT6767 affected
… +51 more rows
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I. Basic Information for CVE-2026-20457

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01826924; Issue ID: MSV-7301.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
MediaTek chipset 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MediaTek chipset是MediaTek公司的一款芯片组产品。 MediaTek chipset存在异常处理不当漏洞，该漏洞源于Modem组件中存在输入验证不当的问题，如果用户设备连接到攻击者控制的恶意基站，可能导致远程拒绝服务。以下版本受到影响：MT2735版本、MT2737版本、MT6739版本、MT6761版本、MT6762版本、MT6763版本、MT6765版本、MT6767版本、MT6768版本、MT6769版本、MT6771版本、MT6779版本、MT6781版本、MT6783版本、
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 MT2735 -

II. Public POCs for CVE-2026-20457

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III. Intelligence Information for CVE-2026-20457

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Vendor Advisories for CVE-2026-20457 (1)

Same Patch Batch · MediaTek, Inc. · 2026-07-01 · 7 CVEs total

CVE-2026-20458 MediaTek chipset 缓冲区错误漏洞
CVE-2026-20459 MediaTek chipset 授权问题漏洞
CVE-2026-20460 MediaTek chipset 授权问题漏洞
CVE-2026-20461 MediaTek chipset 缓冲区错误漏洞
CVE-2026-20462 MediaTek chipset 缓冲区错误漏洞
CVE-2026-20463 MediaTek chipset 权限许可和访问控制问题漏洞

IV. Related Vulnerabilities

Same product: MediaTek chipset
Same vendor: MediaTek, Inc.
Same weakness: CWE-476

V. Comments for CVE-2026-20457

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