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CVE-2026-20466

Quick assessment

Affected
MediaTek, Inc. MediaTek chipset
Exploitation
Public or AI PoC available; prioritize validation
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MediaTek公司的一系列芯片。 MediaTek Chipsets 存在缓冲区错误漏洞，该漏洞源于sec boot中的堆缓冲区溢出，可能导致本地权限提升，攻击者需物理访问设备，无需额外执行权限，且无需用户交互。

AI Predicted 5.5 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 4

VendorProduct Version RangeStatus
MediaTek, Inc. MediaTek chipset MT2737 affected
MT6880 affected
MT6890 affected
MT6990 affected
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I. Basic Information for CVE-2026-20466

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In sec boot, there is a possible escalation of privilege due to a heap buffer overflow. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: AUTO00845351 (Note: For MT2737) / ALPS11072643 (Note: For MT6880, MT6890, MT6990); Issue ID: MSV-6929.
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 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MediaTek Chipsets是中国MediaTek公司的一系列芯片。 MediaTek Chipsets 存在缓冲区错误漏洞，该漏洞源于sec boot中的堆缓冲区溢出，可能导致本地权限提升，攻击者需物理访问设备，无需额外执行权限，且无需用户交互。
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 MT2737 -

II. Public POCs for CVE-2026-20466

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
default-local-qwen3.6 · 11530 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-20466

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Vendor Advisories for CVE-2026-20466 (1)

Same Patch Batch · MediaTek, Inc. · 2026-08-03 · 34 CVEs total

CVE-2026-20473 MediaTek Chipsets 资源管理错误漏洞
CVE-2026-20497 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20480 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20479 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20478 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20477 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20476 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20475 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20474 MediaTek Chipsets 竞争条件问题漏洞
CVE-2026-20481 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20472 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20471 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20469 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20468 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20467 MediaTek Chipsets 权限许可和访问控制问题漏洞
CVE-2026-20465 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20464 MediaTek Chipsets 缓冲区错误漏洞
CVE-2026-20498 MediaTek Chipsets 软件供应链问题漏洞
CVE-2026-20482 MediaTek Chipsets 资源管理错误漏洞
CVE-2026-20483 MediaTek Chipsets 授权问题漏洞

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-20466

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