A missing authorization vulnerability in the SocketIo API 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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Synology DiskStation Manager (DSM) affected
Version Status Constraints
7.4.1 affected < 7.4.1-90080-1
7.3.2 affected < 7.3.2-86009-5
0 unknown < 7.3.2

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.synology.com/en-global/security/advisory/Synology_SA_26_18 cve-icon cve-icon
History

Thu, 12 Nov 2026 03:45:00 +0000

Type Values Removed Values Added
Description A missing authorization vulnerability in the SocketIo API 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.
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: synology

Published:

Updated: 2026-11-12T03:38:29.152Z

Reserved: 2026-08-27T04:41:31.845Z

Link: CVE-2026-81558

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-12T04:17:20.890

Modified: 2026-11-12T04:17:20.890

Link: CVE-2026-81558

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses