CVE-2026-20435
Information Disclosure in MediaTek Preloader Due to Logic Error
Publication date: 2026-03-02
Last updated on: 2026-03-03
Assigner: MediaTek, Inc.
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| openwrt | openwrt | 21.02.0 |
| linuxfoundation | yocto | 4.0 |
| rdkcentral | rdk-b | 2022q3 |
| android | 14.0 | |
| android | 15.0 | |
| rdkcentral | rdk-b | 2024q1 |
| openwrt | openwrt | 23.05.0 |
| zephyrproject | zephyr | 3.7.0 |
| android | 16.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-522 | The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the preloader component where a logic error allows a possible read of device unique identifiers.
An attacker with physical access to the device can exploit this issue to disclose sensitive device information without needing any additional execution privileges or user interaction.
How can this vulnerability impact me? :
The vulnerability can lead to local information disclosure of device unique identifiers.
If an attacker gains physical access to your device, they could extract sensitive device information without requiring any special permissions or user actions.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
Since the vulnerability involves a logic error in the preloader that allows reading device unique identifiers with physical access, immediate mitigation steps include applying the provided patch identified as ALPS10607099.
Restrict physical access to the device to prevent exploitation, as no additional execution privileges or user interaction are needed.