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TI-2021-12735 Aliases CVE-2021-33184GHSA-xqrp-5pxm-3qxh

Server-side request forgery in Synology Download Station

Priority LOW 36CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

Server-Side request forgery (SSRF) vulnerability in task management component in Synology Download Station before 3.8.15-3563 allows remote authenticated users to read arbitrary files via unspecified vectors.

Why it matters now

EPSS 0.01 63rd percentileScored 2026-11-07
Fix Fixed Synology Download Station (Synology): 3.8.15-3563

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SynologySynology Download Stationbefore 3.8.15-35633.8.15-3563Patch availableCNA
  • Synology Download Station VendorSynology Affected before 3.8.15-3563 Fixed in 3.8.15-3563 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:synology:download_station:*:*:*:*:*:*:*:*before 3.8.15-3563VulnerableSynology
  • cpe:2.3:a:synology:download_station:*:*:*:*:*:*:*:* Versions before 3.8.15-3563 Vulnerable ·Synology

Remediation

  • Fix · CNA Synology Download Station (Synology) Fixed in 3.8.15-3563

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33184
  2. 2026-10-03 Alias added: GHSA-xqrp-5pxm-3qxh

References

Advisory 1

  • TI-2021-13803 Command injection in Synology Download Station CVSS 3.1CRITICAL 9.9
  • TI-2021-13804 Improper privilege management in Synology Download Station CVSS 3.1CRITICAL 9.9
  • TI-2017-08213 Incorrect default permissions in Synology Download Station CVSS 3.0HIGH 7.8
  • TI-2017-08206 Server-side request forgery in Synology Download Station CVSS 3.0MEDIUM 6.5
  • TI-2021-13805 Server-side request forgery in Synology Download Station CVSS 3.1MEDIUM 5.0
  • TI-2015-05767 Cross-site scripting (XSS) vulnerability in the "Create download task via URL" feature in… CVSS 2.0MEDIUM 4.3
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences