CVE-2026-40530 - Vulnerability Details - OpenCVE

An improper neutralization of CRLF sequences ('CRLF injection') vulnerability in User 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 read or write arbitrary files and conduct denial-of-service attacks after the system is rebooted.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Synology	Diskstation Manager

No data.

No data.

References

Link	Providers
https://www.synology.com/en-global/security/advisory/Synology_SA_26_06

History

Sat, 19 Sep 2026 22:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Synology Synology diskstation Manager
Vendors & Products		Synology Synology diskstation Manager

Sat, 19 Sep 2026 20:30:00 +0000

Type	Values Removed	Values Added
Title	CRLF Injection in Synology DSM User API Enables Remote File Access and DoS

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

Type	Values Removed	Values Added
Title		CRLF Injection in Synology DSM User API Enables Remote File Access and DoS

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

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

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

Type	Values Removed	Values Added
Description		An improper neutralization of CRLF sequences ('CRLF injection') vulnerability in User 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 read or write arbitrary files and conduct denial-of-service attacks after the system is rebooted.
Weaknesses		CWE-93
References		https://www.synology.com/en-global/security/advisory/Synology_SA_26_06
Metrics		cvssV3_1 `{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'}`

MITRE

Status: PUBLISHED

Assigner: synology

Published: 2026-09-18T08:25:51.624Z

Updated: 2026-09-18T10:49:40.037Z

Reserved: 2026-04-14T01:01:14.606Z

Link: CVE-2026-40530

Vulnrichment

Updated: 2026-09-18T10:49:32.555Z

NVD

Status : Awaiting Analysis

Published: 2026-09-18T09:16:40.237

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

Link: CVE-2026-40530

Redhat

No data.

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