Vulnerability · Published Aug 9, 2025 · Assigned by ASRG

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

Medium 5.1

In plain English

A medium-severity security flaw in DiLink OS from BYD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.2%top 94.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
BYD	DiLink OS	13.1.32.2307211.1

Weakness: CWE-656 · 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

References

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