CWE-656
Reliance on Security Through Obscurity
The product uses a protection mechanism whose strength depends heavily on its obscurity, such that knowledge of its algorithms or key data is sufficient to defeat the mechanism.
CVE-2025-7020 (GCVE-0-2025-7020)
Vulnerability from cvelistv5
Published
2025-08-09 12:42
Modified
2025-08-11 15:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-656 - Incorrect Encryption Implementation
Summary
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.
References
| ▼ | URL | Tags |
|---|---|---|
| https://asrg.io/security-advisories/cve-2025-7020/ | third-party-advisory |
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Mitigation
Phase: Architecture and Design
Description:
- Always consider whether knowledge of your code or design is sufficient to break it. Reverse engineering is a highly successful discipline, and financially feasible for motivated adversaries. Black-box techniques are established for binary analysis of executables that use obfuscation, runtime analysis of proprietary protocols, inferring file formats, and others.
Mitigation
Phase: Architecture and Design
Description:
- When available, use publicly-vetted algorithms and procedures, as these are more likely to undergo more extensive security analysis and testing. This is especially the case with encryption and authentication.
No CAPEC attack patterns related to this CWE.