External Control Vulnerability in Synology DiskStation Manager
CVE-2026-88266

4.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-88266?

A vulnerability exists in Synology DiskStation Manager (DSM) that allows remote authenticated users to tamper with specific system files. This flaw can potentially be exploited to affect the integrity and security of the affected devices, enabling unauthorized access or modification of critical system settings.

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:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Joe Lovett
.