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[Japanese]
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JVNDB-2026-000113
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Improper file access permission settings in Synology Assistant
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Synology Assistant provided by Synology Inc. contains the following vulnerability.- Incorrect default permissions (CWE-276) - CVE-2026-4793
Kazuma Matsumoto of GMO Cybersecurity by IERAE, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
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CVSS V3 Severity:
Base Metrics 6.7 (Medium) [IPA Score]
- Attack Vector: Local
- Attack Complexity: High
- Privileges Required: Low
- User Interaction: Required
- Scope: Unchanged
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
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CVSS v4 Severity
Base Metrics: 5.4 (Medium) [IPA Score]
- Access Vector (AV): Local
- Attack Complexity (AC): Low
- Attack Requirements (AT): Present
- Privileges Required (PR): Low
- User Interaction (UI): Passive
Vulnerable System Impact
- Confidentiality Impact (VC): High
- Integrity Impact (VI): High
- Availability Impact (VA): High
Subsequent System Impact
- Confidentiality Impact (SC): None
- Integrity Impact (SI): None
- Availability Impact (SA): None
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Synology Inc.
- Synology Assistant versions prior to 7.0.7
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Arbitrary code may be executed with SYSTEM privileges by a user who can access the device that the affected product is installed.
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[Update the Software]
Update the software to the latest version according to the information provided by the developer.
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Synology Inc.
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- Permissions(CWE-264) [IPA Evaluation]
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- CVE-2026-4793
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- JVN : JVN#91713656
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- [2026/08/17]
Web page was published
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