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CVE-2026-4793: Incorrect Default Permissions in Synology Synology Assistant

0
High
Published: 08/03/2026 (08/03/2026, 06:00:39 UTC)
Source: CVE Database V5
Vendor/Project: Synology
Product: Synology Assistant

Description

CVE-2026-4793 is a high-severity vulnerability in Synology Assistant prior to version 7.0.7-50095. It involves incorrect default permissions that allow local users to read or write arbitrary files and cause denial-of-service during installation. The vulnerability requires local access and user interaction to exploit. No official patch or remediation guidance is currently confirmed.

CVSS v3.1

Score 7.3high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected software

Synology

Synology Assistant

Affected versions
<7.0.7-50095

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/10/2026, 15:18:55 UTC

Technical Analysis

This vulnerability in Synology Assistant before 7.0.7-50095 arises from incorrect default permissions settings. It permits local users with limited privileges to read or write arbitrary files, potentially leading to data compromise or denial-of-service conditions during the software installation process. The CVSS 3.1 base score is 7.3, reflecting high impact on confidentiality, integrity, and availability. The attack vector is local with low complexity and requires user interaction.

Potential Impact

Successful exploitation allows local users to access or modify arbitrary files, which can compromise system confidentiality and integrity. Additionally, it can cause denial-of-service during installation, impacting availability. The vulnerability affects local users with limited privileges and requires user interaction, limiting remote exploitation.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local user access to systems running vulnerable versions and avoid running the installation process with untrusted local users.

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Technical Details

Data Version
5.2
Assigner Short Name
synology
Date Reserved
2026-03-25T00:47:20.775Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6a703651bf32cb7a34183228

Added to database: 08/03/2026, 06:33:53 UTC

Last enriched: 08/10/2026, 15:18:55 UTC

Last updated: 09/18/2026, 02:36:23 UTC

Views: 62

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