CVE-2021-26564

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.

CVSS v3 8.3 HIGH
CVSS v2.0 5.8 MEDIUM

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.synology.com/security/advisory/Synology_SA_20_26	Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1160	Exploit Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_26	Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1160	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:synology:diskstation_manager:*:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:synology:vs960hd:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:synology:skynas:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:synology:diskstation_manager_unified_controller:3.0:*:*:*:*:*:*:*

cpe:2.3:h:synology:uc3200:-:*:*:*:*:*:*:*

History

14 Jan 2025, 19:29

Type	Values Removed	Values Added
CPE	cpe:2.3:a:synology:diskstation_manager::::::::	cpe:2.3:o:synology:diskstation_manager::::::::

Information

Published : 2021-02-26 22:15

Updated : 2025-01-14 19:29

NVD link : CVE-2021-26564

Mitre link : CVE-2021-26564

CVE.ORG link : CVE-2021-26564

JSON object : View

Products Affected

synology

skynas
skynas_firmware
vs960hd_firmware
vs960hd
diskstation_manager
uc3200
diskstation_manager_unified_controller

CWE

CWE-319

Cleartext Transmission of Sensitive Information

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