Missing Authentication Vulnerability in Synology DiskStation Manager Webdav API
CVE-2026-15198

6.5MEDIUM

Key Information:

Vendor

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

What is CVE-2026-15198?

A vulnerability in Synology DiskStation Manager's Webdav API enables remote attackers to bypass authentication for critical functionalities, allowing unauthorized reading of specific files. This flaw could potentially facilitate limited denial-of-service attacks, compromising the integrity of data and service availability for users.

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:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nuke (https://imnuke.dev)
.