Synology DiskStation Manager up to 7.4-90074 Sharing API crlf injection

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Synology DiskStation Manager up to 7.2.0/7.2.1-69057-11/7.2.2-72806-8/7.3.2-86009-3/7.4-90074. The affected element is an unknown function of the component Sharing API. The manipulation results in crlf injection. This vulnerability is cataloged as CVE-2026-13666. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Synology DiskStation Manager up to 7.2.0/7.2.1-69057-11/7.2.2-72806-8/7.3.2-86009-3/7.4-90074. Affected is an unknown part of the component Sharing API. The manipulation with an unknown input leads to a crlf injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

An improper neutralization of CRLF sequences ('CRLF Injection') vulnerability in Sharing API in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote authenticated users to write limited files when a victim clicks a sharing URL.

The advisory is shared for download at synology.com. This vulnerability is traded as CVE-2026-13666 since 06/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 or 7.4-90075 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: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.5
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 7.2.1-69057-12/7.2.2-72806-9/7.3.2-86009-4/7.4-90075

Timelineinfo

06/29/2026 CVE reserved
09/18/2026 +81 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-2026-13666 (🔒)
GCVE (CVE): GCVE-0-2026-13666
GCVE (VulDB): GCVE-100-407424

Entryinfo

Created: 09/18/2026 10:41
Changes: 09/18/2026 10:41 (64)
Complete: 🔍
Cache ID: 216::103

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