EUVD-2025-19126Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Missing immutable root of trust
|
| Impact | CVSS 7.8 with vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H reflects a high-severity local attack requiring low complexity and low privileges, with high impact to confidentiality, integrity, and availability. The Local Attack Vector (AV:L) and Low Privilege Requirement (PR:L) indicate the attacker must have initial system access and valid credentials, which is a practical constraint in automotive environments. However, the Low Complexity (AC:L) and No User Interaction (UI:N) suggest straightforward exploitation once local access is gained. Real-world risk depends on EPSS probability (not provided in this submission), KEV/CISA catalog status (not indicated), and POC availability. In automotive infotainment contexts, local access is achievable through physical vehicle access, diagnostic tools, or compromised companion devices. The immutable root of trust deficiency is a foundational architectural flaw—not a patchable software issue—meaning traditional firmware updates may not fully resolve it without hardware redesign. This elevates strategic risk despite requiring local access, particularly for fleet management, rental car operations, and vehicle forensics scenarios. |
| Exploit ScenarioDerived | An attacker with physical access to a Pioneer DMH-WT7600NEX (e.g., in a rental car, fleet vehicle, or service center) can connect diagnostic tools or USB interfaces to the infotainment system. They authenticate using known/default credentials or brute-force weak passwords. Once authenticated (PR:L satisfied), they craft a payload that exploits the missing immutable root of trust—for example, by injecting a malicious bootloader or kernel module into accessible firmware regions. Since the SoC lacks hardware verification of the boot chain, the tampered code executes during system startup with full privileges. The attacker achieves arbitrary code execution in the secure context, potentially: stealing navigation data and user information, intercepting vehicle communication (CAN bus), modifying vehicle behavior, or persisting a backdoor. The attack is entirely local (AV:L) with low complexity (AC:L), making it practical for attackers with physical device access. No POC availability is indicated in the submission, but the architectural flaw suggests one could be developed by researchers with SoC reverse-engineering capabilities. |
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Alert meAnalysisAIv1 – Mar 15, 2026
CVE-2025-5834 is a local privilege escalation vulnerability in Pioneer DMH-WT7600NEX infotainment systems caused by a missing hardware root of trust in the SoC configuration. An attacker with local access and valid authentication credentials can bypass the existing authentication mechanism and execute arbitrary code during boot with elevated privileges. The vulnerability has a CVSS score of 7.8 (High) and was previously tracked as ZDI-CAN-26078; exploitation likelihood and active exploitation status depend on public POC availability and EPSS scoring.
RemediationAI
Remediation options are limited by the nature of the vulnerability: (1) Firmware Update: Pioneer should release a signed firmware update that implements cryptographic verification and secure boot enforcement, though this may not fully address missing hardware-level immutable trust anchors. (2) Hardware Mitigation: For new devices, Pioneer must implement hardware-enforced secure boot with an immutable root of trust in the SoC—potentially requiring hardware revision. (3) Access Controls: Interim mitigation includes restricting local access to the device, disabling physical debug ports, and enforcing strong authentication mechanisms for any local interfaces. (4) Vendor Advisory: Check Pioneer's official security advisory for patched firmware versions and deployment guidance. Users should contact Pioneer support at their official channels to obtain and deploy available patches. (5) Detection: Implement device integrity monitoring and anomaly detection on boot processes to identify tampering attempts.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Technical ContextAI · show details
This vulnerability resides in the hardware-level configuration of the Pioneer DMH-WT7600NEX's system-on-chip (SoC), specifically the absence of an immutable root of trust mechanism. CWE-1326 (Hardware Root of Trust Issues) indicates that the device lacks cryptographic verification of boot firmware and system integrity at the hardware level. Without a properly configured secure boot chain anchored in hardware, an attacker can tamper with bootloader, kernel, or system software without detection. The DMH-WT7600NEX is an automotive infotainment receiver that integrates multimedia playback, navigation, and vehicle integration functions—all of which execute with privileges derived from an unverified boot process. The missing immutable root of trust means no hardware-enforced cryptographic validation occurs before code execution, allowing privilege escalation from a low-privilege authenticated user context to arbitrary code execution in the secure boot environment.
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
Pioneer DMH-WT7600NEX Missing Immutable Root of Trust in Hardware Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to bypass authentication on affected installations of Pioneer DMH-WT7600NEX devices. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the configuration of the application system-on-chip (SoC). The issue results from the lack of a properly configured hardware root of trust. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the boot process. Was ZDI-CAN-26078.
Executive ViewAI
Pioneer DMH-WT7600NEX devices contain a hardware-level privilege escalation vulnerability that allows attackers with local access to bypass authentication and execute arbitrary code during boot. Organizations using these automotive/marine head units should inventory affected devices and implement access controls immediately, as no patch is currently available.
Implement strict physical access controls to affected devices; disable any network connectivity features if operationally feasible; restrict local user accounts and enforce strong authentication on host systems; monitor device boot logs for anomalous activity; isolate affected devices on segmented networks with minimal lateral movement capability; consider disabling unused features or services accessible from the SoC layer.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
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GitHub PoC
Exploit-DB