CVE-2025-7020: BYD DiLink OS Incorrect encryption Implementation of system log dumps

Severity: medium (CVSS 5.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-09 · updated 2026-06-17
Weakness: CWE-656

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.

Affected products

BYD DiLink OS: 13.1.32.2307211.1

References

https://asrg.io/security-advisories/cve-2025-7020/

Get alerted when CVE-2025-7020 or the next vulnerability affects your stack