MediaTek Preloader Local Info Disclosure via UID Exposure
CVE-2026-20435 Published on March 2, 2026
In preloader, there is a possible read of device unique identifiers due to a logic error. This could lead to local information disclosure, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10607099; Issue ID: MSV-6118.
Vulnerability Analysis
CVE-2026-20435 can be exploited with physical access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Insufficiently Protected Credentials
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
Products Associated with CVE-2026-20435
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Affected Versions
MediaTek, Inc. MT2737, MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6813, MT6833, MT6853, MT6855, MT6877, MT6878, MT6879, MT6880, MT6885, MT6886, MT6890, MT6893, MT6895, MT6897, MT6983, MT6985, MT6989, MT6990, MT6993, MT8169, MT8186, MT8188, MT8370, MT8390, MT8676, MT8678, MT8696, MT8793 Version Android 14.0, 15.0, 16.0 / openWRT 21.02, 23.05 / Yocto 4.0 / RDK-B 22Q3, 24Q1 / Zephyr 3.7.0 is affected by CVE-2026-20435Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.