CVEvulnerability

CVE-2021-26566

9.0 CRITICAL Published 2021-02-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-02-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.3 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.0 CRITICAL — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-200, CWE-201

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.

Affected configurations

• synology diskstation manager (< 6.2.3-25426-3) • synology vs960hd firmware • synology skynas firmware • synology diskstation manager unified controller 3.0

Related

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-201 Insertion of Sensitive Information Into Sent Data weakness

References