CVE-2025-66593 json
An origin validation error vulnerability in Synology Assistant before 7.0.6-50085 allows local users to write arbitrary files with restrict…
published 2026-05-27 5 mo ago modified 2026-10-07 33 d ago also EUVD-2025-209963
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 0%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Synology Synology Assistant 7.0.6-50085
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.09% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H |
| NVD | 3.1 | 5.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H |
Affected products
- Synology Synology Assistant
Classification
- Weakness
-
- CWE-346 Origin Validation Error
References
-
synology.com
/en-global/security/advisory/Synology_SA_25_17
vendor-advisory
Sources
- CVE List CVE-2025-66593
- NVD CVE-2025-66593
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