Sensitive Information Transmission Flaw in Synology DiskStation Manager
CVE-2021-26564

8.7HIGH

Key Information:

Vendor

Synology
Status
Synology Diskstation Manager (dsm)
Vendor
CVE Published:
26 February 2021

What is CVE-2021-26564?

A vulnerability in Synology DiskStation Manager (DSM) allows for the cleartext transmission of sensitive data due to improper handling of HTTP sessions. This flaw enables man-in-the-middle attackers to spoof servers, potentially leading to unauthorized access to sensitive information. Users of affected versions are advised to update to the latest version to mitigate the risk associated with this vulnerability. Further information can be found in Synology's security advisory.

Affected Version(s)

Synology DiskStation Manager (DSM) < 6.2.3-25426-3

References

https://www.synology.com/security/advisory/Synology_SA_20_26
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https://www.talosintelligence.com/vulnerability_reports/T...
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CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-26564 : Sensitive Information Transmission Flaw in Synology DiskStation Manager