CVE-2026-13672

Authorization Bypass in Synology DSM SSOAuth Allows Remote Authenticated File Access and DoS

Published Nov 12, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
An authorization bypass through user-controlled key vulnerability in the SSOAuth in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to read or write arbitrary files and conduct denial-of-service attacks.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Synology
Synology diskstation Manager
Vendors & Products Synology
Synology diskstation Manager
Type Values Removed Values Added
Title Authorization Bypass in Synology DSM SSOAuth Allows Remote Authenticated File Access and DoS
Type Values Removed Values Added
Description An authorization bypass through user-controlled key vulnerability in the SSOAuth in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to read or write arbitrary files and conduct denial-of-service attacks.
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
synology
Published
Updated
Nov 12, 2026, 3:31 AM
Reserved
Jun 29, 2026, 10:34 AM
Status
Awaiting Analysis
Published
Nov 12, 2026, 4:17 AM
Modified
Nov 12, 2026, 7:02 PM