Access Vulnerability in Synology DiskStation Manager (DSM)
CVE-2026-18633

7.5HIGH

Key Information:

Vendor

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

What is CVE-2026-18633?

An uninitialized pointer access vulnerability has been discovered in Synology DiskStation Manager (DSM) which can allow remote attackers to execute denial-of-service attacks. This flaw affects versions before 7.3.2-86009-5 and 7.4.1-90080-1, making systems prone to disruption. It is crucial for users to update their systems to the latest versions to mitigate this risk.

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:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pumpkin (@u1f383) from DEVCORE Research Team
.