Synology Assistant up to 7.0.6-50084 Installation origin validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Synology Assistant up to 7.0.6-50084 and classified as problematic. This affects an unknown function of the component Installation Handler. Such manipulation leads to origin validation. This vulnerability is listed as CVE-2025-66593. The attack must be carried out locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Synology Assistant up to 7.0.6-50084. Affected by this issue is an unknown code of the component Installation Handler. The manipulation with an unknown input leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is integrity, and availability. CVE summarizes:

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

The weakness was presented by Sheikh Rishad as SA_25_17. The advisory is available at synology.com. This vulnerability is handled as CVE-2025-66593 since 12/05/2025. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

Upgrading to version 7.0.6-50085 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (synology): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Assistant 7.0.6-50085

Timelineinfo

12/05/2025 CVE reserved
05/27/2026 +172 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
05/27/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: synology.com

Advisory: SA_25_17
Researcher: Sheikh Rishad
Status: Confirmed

CVE: CVE-2025-66593 (🔒)
GCVE (CVE): GCVE-0-2025-66593
GCVE (VulDB): GCVE-100-365978

Entryinfo

Created: 05/27/2026 11:41
Changes: 05/27/2026 11:41 (65)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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