01 Record
CVE-2020-27656
Cleartext transmission of sensitive information vulnerability in DDNS in Synology DiskStation Manager (DSM) before 6.2.3-25426-2 allows man-in-the-middle attackers to eavesdrop authentication
MediumPUBLISHEDCNA: synology
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
02 Description
Cleartext transmission of sensitive information vulnerability in DDNS in Synology DiskStation Manager (DSM) before 6.2.3-25426-2 allows man-in-the-middle attackers to eavesdrop authentication
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.54% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 45.5% of scored records. A rank, not a probability.
- NVD base score
- 3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- NVD analysis status
- Modified. 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
- 2020-10-29 09:00Z6 YR AGO
- Last updated
- 2024-09-16 17:28Z2 YR AGO
- Reserved
- 2020-10-22
- Assigning CNA
- synology
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
- Weaknesses
- CWE-319Cleartext Transmission of Sensitive InformationBase
- Data version
- 5.1
- Document digest
- 8397e9a4951b3d096f4ae51f0c18f4346998edf5adab7f2f8d55c3f7f84db328
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.synology.comhttps://www.synology.com/security/advisory/Synology_SA_20_18
- www.talosintelligence.comhttps://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1071