CVE-2023-28895

PWC chip control via hard-coded console password

Published Dec 1, 2023 · Updated Dec 2, 2024

Use of a hard-coded password in JOYNEXT MIB3 firmware 0304 and earlier allows physically proximate attackers to control the PWC chip. The firmware embeds a fixed credential for the PoWer Controller debugging console, allowing the credential to replace unique per-unit authentication. Physical access to the infotainment unit is required, after which console commands provide full control of the PWC chip and can alter or interrupt its operation.

CVSS severity3.5
Low
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of a hard-coded password in JOYNEXT MIB3 firmware 0304 and earlier allows physically proximate attackers to control the PWC chip. The firmware embeds a fixed credential for the PoWer Controller debugging console, allowing the credential to replace unique per-unit authentication. Physical access to the infotainment unit is required, after which console commands provide full control of the PWC chip and can alter or interrupt its operation.

The record

CVE
CVE-2023-28895
Published
Dec 1, 2023
Updated
Dec 2, 2024
Vendor
JOYNEXT GmbH
Product
JOYNEXT MIB3 Infotainment Unit
Classifications
CWE-798, CWE-259, CAPEC-37
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0304

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

JOYNEXT GmbH · JOYNEXT MIB3 Infotainment Unitversion=0 <=0304

Published CVSS scores

3.5Automotive Security Research GroupCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
6.8NIST National Vulnerability DatabaseCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CWE-259Use of Hard-coded Password
CAPEC-37Retrieve Embedded Sensitive Data

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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