01 Record
CVE-2025-7020
BYD DiLink OS Incorrect encryption Implementation of system log dumps
MediumPUBLISHEDCNA: ASRG
CNA base score5.1 CVSS v4.0CVSS: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
02 Description
BYD DiLink OS Incorrect encryption Implementation of system log dumps
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.14% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 4.0% of scored records. A rank, not a probability.
- NVD base score
- 5.1 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:D/RE:H/U:X
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2025-08-09 12:42Z1 YR AGO
- Last updated
- 2025-08-11 15:54Z1 YR AGO
- Reserved
- 2025-07-02
- Assigning CNA
- ASRG
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.1)
- CNA CVSS 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
- Weaknesses
- CWE-656Reliance on Security Through ObscurityClass
- Data version
- 5.1
- Document digest
- 3277a0a8ce23255e6a385331cf8c3090e11dcaa63607451351298bf5a035885f
05 Affected products
VendorProductVersionsPlatforms
06 References
07 Remediation
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.