CVE-2026-88266

MEDIUM CVSS 3.1: 4.3 EPSS 0.43%
Updated Nov 12, 2026
Synology
Parameter Value
CVSS 4.3 (MEDIUM)
Affected Versions before 7.3.2
Type CWE-15 (External Control of System Setting)
Vendor Synology
Public PoC No

An external control of system or configuration setting vulnerability in the synomount in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write specific files.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1