CVE-2021-34810

8.8 highEPSS 1.4%

High (8.8) in synology download station. EPSS 1.4% chance of exploitation in the next 30 days.

Improper privilege management vulnerability in cgi component in Synology Download Station before 3.8.16-3566 allows remote authenticated users to execute arbitrary code via unspecified vectors.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-10-31)
CWE: CWE-269
Published: 2021-06-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

synology:download_station

References

https://www.synology.com/security/advisory/Synology_SA_21_11
https://www.synology.com/security/advisory/Synology_SA_21_11

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