CVE-2021-26564

CVSS 3.1 Score 8.7 of 10 (high)

Details

Published Feb 26, 2021
Updated: Jan 14, 2025
CWE ID 319

Summary

CVE-2021-26564 is a cleartext transmission vulnerability affecting Synology DiskStation Manager (DSM) versions prior to 6.2.3-25426-3. This issue permits man-in-the-middle attackers to spoof servers during an HTTP session, exposing sensitive information in plaintext. Attackers can intercept and read this data, posing a significant risk to data confidentiality. Synology recommends users update their DSM installations to mitigate this vulnerability.

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Affected Products

  • DiskStation Manager
  • Synology Diskstation Manager Unified Controller

Affected Vendors

  • Synology

Advisories, Assessments, and Mitigations