{"id":"CVE-2025-7020","state":"PUBLISHED","title":"BYD DiLink OS Incorrect encryption Implementation of system log dumps","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.\n\nThis vulnerability was introduced in a patch intended to fix CVE-2024-54728.","publishedAt":"2025-08-09T12:42:29.150Z","updatedAt":"2025-08-11T15:54:36.036Z","severity":{"score":5.1,"label":"Medium","version":"4.0","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","source":"ASRG"},"assigner":"ASRG","products":["BYD DiLink OS"],"affected":[{"vendor":"BYD","product":"DiLink OS","defaultStatus":"unaffected","versions":[{"version":"13.1.32.2307211.1","status":"affected"}],"modules":["Multimedia Unit","IVI","filesystem","log dump"],"platforms":["Dilink 3.0"]}],"references":["https://asrg.io/security-advisories/cve-2025-7020/"],"weaknesses":["CWE-656"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/7xxx/CVE-2025-7020.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-7020","state":"PUBLISHED","datePublished":"2025-08-09T12:42:29.150Z","dateUpdated":"2025-08-11T15:54:36.036Z","assignerShortName":"ASRG","assignerOrgId":"c15abc07-96a9-4d11-a503-5d621bfe42ba","dateReserved":"2025-07-02T12:24:26.302Z"},"containers":{"cna":{"title":"BYD DiLink OS Incorrect encryption Implementation of system log dumps","descriptions":[{"lang":"en","value":"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.\n\nThis vulnerability was introduced in a patch intended to fix CVE-2024-54728."}],"affected":[{"vendor":"BYD","product":"DiLink OS","defaultStatus":"unaffected","versions":[{"version":"13.1.32.2307211.1","status":"affected"}],"modules":["Multimedia Unit","IVI","filesystem","log dump"],"platforms":["Dilink 3.0"]}],"references":[{"url":"https://asrg.io/security-advisories/cve-2025-7020/","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"YES","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"PHYSICAL","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"HIGH"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-656","description":"CWE-656: Incorrect Encryption Implementation","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"ASRG","orgId":"c15abc07-96a9-4d11-a503-5d621bfe42ba","dateUpdated":"2025-08-09T12:42:29.150Z"},"credits":[{"lang":"en","type":"finder","value":"Lior Zur Lotan (PlaxidityX)"}],"datePublic":"2025-08-09T12:00:00.000Z","impacts":[{"capecId":"CAPEC-37","descriptions":[{"lang":"en","value":"CAPEC-37 Retrieve Embedded Sensitive Data"}]}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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."}],"value":"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."}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-11T15:54:29.496185Z","id":"CVE-2025-7020","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-11T15:54:36.036Z"}}]}}}