Synology DiskStation Manager up to 7.2.0/7.2.2-72806-6/7.3.2-86009-1 User API crlf injection

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.39

Summaryinfo

A vulnerability labeled as very critical has been found in Synology DiskStation Manager up to 7.2.0/7.2.2-72806-6/7.3.2-86009-1. This impacts an unknown function of the component User API. Such manipulation leads to crlf injection. This vulnerability is listed as CVE-2026-40530. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Synology DiskStation Manager up to 7.2.0/7.2.2-72806-6/7.3.2-86009-1. It has been rated as very critical. Affected by this issue is an unknown part of the component User API. The manipulation with an unknown input leads to a crlf injection vulnerability. Using CWE to declare the problem leads to CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at synology.com. This vulnerability is handled as CVE-2026-40530 since 04/14/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/18/2026).

Upgrading to version 7.2.1-69057-10, 7.2.2-72806-7 or 7.3.2-86009-2 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.0
CNA Vector (synology): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Crlf injection
CWE: CWE-93 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: DiskStation Manager 7.2.1-69057-10/7.2.2-72806-7/7.3.2-86009-2

Timelineinfo

04/14/2026 CVE reserved
09/18/2026 +157 days Advisory disclosed
09/18/2026 +0 days VulDB entry created
09/18/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: synology.com

Advisory: synology.com
Status: Confirmed

CVE: CVE-2026-40530 (🔒)
GCVE (CVE): GCVE-0-2026-40530
GCVE (VulDB): GCVE-100-407438

Entryinfo

Created: 09/18/2026 10:50
Changes: 09/18/2026 10:50 (64)
Complete: 🔍
Cache ID: 216::103

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