Synology DiskStation Manager up to 7.3.1/7.3.2-86009-4/7.4.1-90080-0 ACL API improper authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00+

Summaryinfo

A vulnerability was found in Synology DiskStation Manager up to 7.3.1/7.3.2-86009-4/7.4.1-90080-0. It has been declared as critical. Impacted is an unknown function of the component ACL API. Such manipulation leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-19833. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Synology DiskStation Manager up to 7.3.1/7.3.2-86009-4/7.4.1-90080-0. Affected by this issue is some unknown processing of the component ACL API. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A missing authorization vulnerability in the ACL API in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to read or write specific files.

The advisory is shared for download at synology.com. This vulnerability is handled as CVE-2026-19833 since 08/14/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 7.3.2-86009-5 or 7.4.1-90080-1 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: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (synology): 🔒

CVSSv2info

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

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
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 7.3.2-86009-5/7.4.1-90080-1

Timelineinfo

08/14/2026 CVE reserved
11/12/2026 +90 days Advisory disclosed
11/12/2026 +0 days VulDB entry created
11/12/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: synology.com

Advisory: synology.com
Status: Confirmed

CNA: synology
CVE: CVE-2026-19833 (🔒)

GCVE (CVE): GCVE-0-2026-19833
GCVE (VulDB): GCVE-100-436232

Entryinfo

Created: 11/12/2026 04:58
Changes: 11/12/2026 04:58 (64)
Complete: 🔍
Cache ID: 216::103

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