CVE-2025-7020

BYD DiLink OS Incorrect encryption Implementation of system log dumps

Published Aug 9, 2025 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
An incorrect encryption implementation vulnerability exists in the system log dump feature of BYD's DiLink 3.0 OS (e.g. in the model ATTO3). An attacker with physical access to the vehicle can bypass the encryption of log dumps on the In-Vehicle Infotainment (IVI) unit's storage. This allows the attacker to access and read system logs containing sensitive data, including personally identifiable information (PII) and location data.

This vulnerability was introduced in a patch intended to fix CVE-2024-54728.

Remediation

Vendor Solution

It is recommended to review and correct the encryption implementation used for system log dumps, ensuring the use of secure key management and proper encryption algorithm implementation practices.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-24049 An incorrect encryption implementation vulnerability exists in the system log dump feature of BYD's DiLink 3.0 OS (e.g. in the model ATTO3). An attacker with physical access to the vehicle can bypass the encryption of log dumps on the In-Vehicle Infotainment (IVI) unit's storage. This allows the attacker to access and read system logs containing sensitive data, including personally identifiable information (PII) and location data. This vulnerability was introduced in a patch intended to fix CVE-2024-54728.
History
Type Values Removed Values Added
First Time appeared Byd
Byd dilink Os
Vendors & Products Byd
Byd dilink Os
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An incorrect encryption implementation vulnerability exists in the system log dump feature of BYD's DiLink 3.0 OS (e.g. in the model ATTO3). An attacker with physical access to the vehicle can bypass the encryption of log dumps on the In-Vehicle Infotainment (IVI) unit's storage. This allows the attacker to access and read system logs containing sensitive data, including personally identifiable information (PII) and location data. This vulnerability was introduced in a patch intended to fix CVE-2024-54728.
Title BYD DiLink OS Incorrect encryption Implementation of system log dumps
Weaknesses CWE-656
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/V:D/RE:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ASRG
Published
Updated
Aug 11, 2025, 3:54 PM
Reserved
Jul 2, 2025, 12:24 PM
Status
Deferred
Published
Aug 9, 2025, 1:15 PM
Modified
Jun 17, 2026, 10:04 AM