CVE-2025-66593

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.

CVSS 3.1

5.6CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H

EPSS

0.09% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-25)

CWE

CWE-346

Published

2026-05-27

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• synology:assistant

References

• https://www.synology.com/en-global/security/advisory/Synology_SA_25_17

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