Server-Side Request Forgery in Synology DiskStation Manager by Synology
CVE-2026-77738

4.3MEDIUM

Key Information:

Vendor

Synology
Status
Diskstation Manager (dsm)
Vendor
CVE Published:
12 November 2026

What is CVE-2026-77738?

A server-side request forgery vulnerability exists in the Credential API of Synology DiskStation Manager, allowing remote authenticated users to exploit this flaw to read specific files on the server. Versions prior to 7.3.2-86009-5 and 7.4.1-90080-1 are affected, emphasizing the need for users to keep their systems updated to mitigate potential security risks. For further details, refer to the official advisory.

Affected Version(s)

DiskStation Manager (DSM) 7.4.1

DiskStation Manager (DSM) 7.4.1 < 7.4.1-90080-1

DiskStation Manager (DSM) 7.3.2 < 7.3.2-86009-5

References

https://www.synology.com/en-global/security/advisory/Syno...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jincheng Wang (@winmt) from Nanjing University of Posts and Telecommunications
.