CVE-2021-26566

HIGH

Synology DiskStation Manager < 6.2.3-25426-3 - Remote Code Execution via QuickConnect Traffic

Title source: llm
STIX 2.1

Description

Insertion of sensitive information into sent data vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary commands via inbound QuickConnect traffic.

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 0.0053
EPSS Percentile 67.6%
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-201 CWE-200
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