CVE-2023-28897

Protected UDS access via embedded credential

Published Jan 12, 2024 · Updated Jun 17, 2025

Use of hard-coded credentials in JOYNEXT MIB3 Infotainment Unit 0304 and earlier allows local users to access critical UDS services. The firmware stores a fixed secret value used to authenticate requests to those diagnostic services, making the credential recoverable from the device image. Exploitation requires local access to the vehicle or its infotainment firmware; the advisory reports protected-service access but no integrity or availability impact.

CVSS severity9.8
Critical
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 hard-coded credentials in JOYNEXT MIB3 Infotainment Unit 0304 and earlier allows local users to access critical UDS services. The firmware stores a fixed secret value used to authenticate requests to those diagnostic services, making the credential recoverable from the device image. Exploitation requires local access to the vehicle or its infotainment firmware; the advisory reports protected-service access but no integrity or availability impact.

The record

CVE
CVE-2023-28897
Published
Jan 12, 2024
Updated
Jun 17, 2025
Vendor
JOYNEXT GmbH
Product
JOYNEXT MIB3 Infotainment Unit
Classifications
CWE-798, CAPEC-115, T1552.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record 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 vectorlocal
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

4.0Automotive Security Research Group (ASRG)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
9.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CAPEC-115Authentication Bypass
T1552.001Unsecured Credentials: Credentials In Files

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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