An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to read limited files via brute-force attacks.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00249.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Synology DiskStation Manager (DSM) affected
Version Status Constraints
7.3.2 affected < 7.3.2-86009-2
7.2.2 affected < 7.2.2-72806-7
7.2.1 affected < 7.2.1-69057-10
0 unknown < 7.2.1

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.synology.com/en-global/security/advisory/Synology_SA_26_06 cve-icon cve-icon
History

Sat, 19 Sep 2026 01:15:00 +0000

Type Values Removed Values Added
Title Improper Restriction of Excessive Authentication Attempts Enables Brute‑Force File Access in Synology DSM

Fri, 18 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 18 Sep 2026 08:45:00 +0000

Type Values Removed Values Added
Description An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to read limited files via brute-force attacks.
Weaknesses CWE-307
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: synology

Published:

Updated: 2026-09-18T10:42:50.358Z

Reserved: 2026-04-14T01:01:14.607Z

Link: CVE-2026-40538

cve-icon Vulnrichment

Updated: 2026-09-18T10:42:45.497Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-18T09:16:41.307

Modified: 2026-09-18T19:07:38.320

Link: CVE-2026-40538

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T01:00:09Z

Weaknesses