CVE-2021-26564

HIGH

Synology DiskStation Manager < 6.2.3-25426-3 - Cleartext Transmission of Sensitive Information via synorelayd

Title source: llm
STIX 2.1

Description

Cleartext transmission of sensitive information vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to spoof servers via an HTTP session.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1160

Scores

CVSS v3 8.3
EPSS 0.0014
EPSS Percentile 32.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Details

CWE
CWE-319
Status published
Products (4)
synology/diskstation_manager < 6.2.3-25426-3
synology/diskstation_manager_unified_controller 3.0
synology/skynas_firmware
synology/vs960hd_firmware
Published Feb 26, 2021
Tracked Since Feb 18, 2026