CVE-2026-20435

MEDIUM
2026-03-02 [email protected]
4.6
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 02, 2026 - 09:16 nvd
MEDIUM 4.6

Tags

Information Disclosure Openwrt Android Yocto Rdk B Zephyr Google

Description

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.

Analysis

Device unique identifiers in the preloader of Openwrt, Android, Yocto, RDK-B, and Zephyr can be read by attackers with physical access due to a logic error, leading to local information disclosure without requiring additional privileges or user interaction. This vulnerability affects multiple embedded and IoT platforms where the preloader executes before operating system initialization. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +23
POC: 0

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CVE-2026-20435 vulnerability details – vuln.today
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