CVE-2025-7020

Sensitive log disclosure via hard-coded encryption key

Published Aug 9, 2025 · Updated Aug 11, 2025

Incorrect encryption in BYD DiLink 3.0 OS 13.1.32.2307211.1 allows physically proximate attackers to read sensitive system logs. The multimedia unit encrypts periodic log dumps with AES material whose initialization vector can be extracted and whose hard-coded key can be regenerated. Physical vehicle and IVI debug-port access are required; exposed data includes PII and vehicle location information.

CVSS severity5.1
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect encryption in BYD DiLink 3.0 OS 13.1.32.2307211.1 allows physically proximate attackers to read sensitive system logs. The multimedia unit encrypts periodic log dumps with AES material whose initialization vector can be extracted and whose hard-coded key can be regenerated. Physical vehicle and IVI debug-port access are required; exposed data includes PII and vehicle location information.

The record

CVE
CVE-2025-7020
Published
Aug 9, 2025
Updated
Aug 11, 2025
Vendor
BYD Company Limited
Product
DiLink
Classifications
CWE-656, CAPEC-37, T1005
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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=13.1.32.2307211.1

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

BYD Company Limited · DiLinkversion=13.1.32.2307211.1

Published CVSS scores

5.1Automotive Security Research GroupCVSS: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

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-656Reliance on Security Through Obscurity
CAPEC-37Retrieve Embedded Sensitive Data
T1005Data from Local System

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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