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Synology DSM CVE-2026-4036

| EUVDEUVD-2026-82786 MEDIUM
SQL Injection (CWE-89)
2026-09-18 synology GHSA-7j66-q2g2-58mc
6.5
CVSS 3.1 · Vendor: synology
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Severity by source

Vendor (synology) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
6.5 MEDIUM

Network-reachable Sharing API SQLi needs a valid low-privilege DSM account (PR:L), no interaction, yielding arbitrary file disclosure (C:H) with no integrity or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (synology).

CVSS VectorVendor: synology

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Patch available
Sep 18, 2026 - 09:16 EUVD
Analysis Generated
Sep 18, 2026 - 09:10 vuln.today

DescriptionCVE.org

An improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in Sharing API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote authenticated users to obtain arbitrary sharing files.

AnalysisAI

An authenticated SQL injection in the Sharing API of Synology DiskStation Manager (DSM) allows remote users with valid - even low-privilege - DSM credentials to read arbitrary sharing files they should not be able to access. The flaw (CWE-89) affects DSM builds prior to 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2, and is constrained by its credential prerequisite: no user interaction is required, but a logged-in session is, which limits it to a confidentiality-only impact (CVSS 6.5, C:H/I:N/A:N) rather than full system compromise. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated Synology DSM user account (PR:L) with network reach to the DSM Sharing API; no user interaction is needed. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a legitimate but bounded confidentiality issue rather than a top-tier emergency. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade DSM to the fixed build for your release train: 7.2.1-69057-10, 7.2.2-72806-7, or 7.3.2-86009-2 (vendor advisory: https://www.synology.com/en-global/security/advisory/Synology_SA_26_06). … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-4036 vulnerability details – vuln.today

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