CVE-2026-4793

An incorrect default permissions vulnerability in Synology Assistant before 7.0.7-50095 allows local users to read or write arbitrary files and conduct denial-of-service during installation.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.3 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.synology.com/en-global/security/advisory/Synology_SA_26_12	Release Notes Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:synology:assistant:*:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-03 07:16

Updated : 2026-08-21 16:23

NVD link : CVE-2026-4793

Mitre link : CVE-2026-4793

CVE.ORG link : CVE-2026-4793

JSON object : View

Products Affected

synology

assistant

microsoft

windows

CWE

CWE-276

Incorrect Default Permissions

{"id": "CVE-2026-4793", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4793", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-03T14:46:03.226652Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@synology.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.3}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.3}]}, "affected": [{"source": "security@synology.com", "affectedData": [{"vendor": "Synology", "product": "Synology Assistant", "versions": [{"status": "affected", "version": "*", "lessThan": "7.0.7-50095", "versionType": "semver"}], "defaultStatus": "affected"}]}], "published": "2026-08-03T07:16:43.453", "references": [{"url": "https://www.synology.com/en-global/security/advisory/Synology_SA_26_12", "tags": ["Release Notes", "Vendor Advisory"], "source": "security@synology.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@synology.com", "description": [{"lang": "en", "value": "CWE-276"}]}], "descriptions": [{"lang": "en", "value": "An incorrect default permissions vulnerability in Synology Assistant before 7.0.7-50095 allows local users to read or write arbitrary files and conduct denial-of-service during installation."}], "lastModified": "2026-08-21T16:23:17.737", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:synology:assistant:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0CEEE147-C271-486D-98D5-72CDC4D67BD4", "versionEndExcluding": "7.0.7-50095"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@synology.com"}