CVE-2025-5834VulnerabilityPublished 25 Jun 2025

CVE-2025-5834: Pioneer DMH-WT7600NEX · Missing Immutable Root of Trust in Hardware

Affects Pioneer DMH-WT7600NEXSource CVE Database V5

Not known to be exploited · CVSS 4.4 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.0 base score

4.4Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Attack Vector: Local
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Pioneer DMH-WT7600NEX	Affected =3.05	Fixed in–

AI-suggested

1. Immediate mitigation should focus on restricting physical and local access to affected Pioneer DMH-WT7600NEX devices, especially in fleet or enterprise environments. 2. Implement strict access controls and monitoring on devices to detect unauthorized authentication attempts or unusual boot process behaviors. 3. Coordinate with Pioneer for timely release and deployment of firmware updates or patches that introduce a proper immutable hardware root of trust or equivalent security mechanisms. 4. Employ hardware security modules (HSMs) or trusted platform modules (TPMs) in vehicle systems where possible to provide an external root of trust. 5. Conduct regular integrity checks and cryptographic verification of boot firmware to detect unauthorized modifications. 6. For organizations managing large vehicle fleets, consider network segmentation to isolate infotainment systems from critical vehicle control networks, limiting potential lateral movement. 7. Train personnel on the risks of local privilege escalation and enforce policies to prevent unauthorized physical access to vehicle systems. 8. Monitor threat intelligence sources for emerging exploits targeting this vulnerability to enable rapid response.

Description

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.

Impact

For European organizations, the impact of this vulnerability depends largely on the deployment scale of Pioneer DMH-WT7600NEX devices within their vehicle fleets or embedded systems. Organizations involved in automotive manufacturing, fleet management, or connected vehicle services could face risks of unauthorized firmware manipulation, leading to compromised vehicle infotainment systems. This could result in unauthorized code execution that might be leveraged to interfere with vehicle diagnostics, data integrity, or potentially serve as a foothold for lateral movement within connected vehicle networks. Although the vulnerability does not directly affect confidentiality or availability, the integrity compromise could undermine trust in vehicle systems and lead to safety concerns or regulatory compliance issues. The requirement for local access and initial authentication reduces the likelihood of remote exploitation but does not eliminate insider threats or attacks facilitated by physical access. Given the increasing integration of infotainment systems with broader vehicle control networks, this vulnerability could serve as a stepping stone for more severe attacks if combined with other vulnerabilities.

CWE-1326Missing Immutable Root of Trust in Hardware (opens in a new tab)
Base weakness
A missing immutable root of trust in the hardware results in the ability to bypass secure boot or execute untrusted or adversarial boot code.
Architecture and Design
When architecting the system, the RoT should be designated for storage in a memory that does not allow further programming/writes.
Implementation
During implementation and test, the RoT memory location should be demonstrated to not allow further programming/writes.
Attack patterns
Exploitation of Improperly Configured or Implemented Memory Protections (opens in a new tab)
Subvert Code-signing Facilities (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

zerodayinitiative.com/advisories/ZDI-25-351/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Jun 2025, 18:26 UTC

WeaknessesCWE-1326

Technical details

References

Community reviews

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