CVE-2025-66593
Analyzed Analyzed - Analysis Complete

Origin Validation Error in Synology Assistant Allows Arbitrary File Write

Publication date: 2026-05-27

Last updated on: 2026-06-02

Assigner: Synology Inc.

Description
An origin validation error vulnerability in Synology Assistant before 7.0.6-50085 allows local users to write arbitrary files with restricted content and conduct denial-of-service during installation.

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Meta Information

Published
2026-05-27
Last Modified
2026-06-02
Generated
2026-07-06
AI Q&A
2026-05-27
EPSS Evaluated
2026-07-05
NVD
CVE-2025-66593
EUVD
EUVD-2025-209963

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
synology assistant to 7.0.6-50085 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-346 The product does not properly verify that the source of data or communication is valid.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

This vulnerability is an origin validation error in Synology Assistant versions before 7.0.6-50085. It allows local users to write arbitrary files with restricted content during the installation process.

Impact Analysis

The vulnerability can allow a local user to write arbitrary files with restricted content, which may lead to integrity issues or disruption of the system's availability.

Mitigation Strategies

To mitigate this vulnerability, users are advised to upgrade Synology Assistant to version 7.0.6-50085 or later.

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