CVE-2026-74857: High severity vulnerability

Published Nov 12, 2026

Updated

A missing critical step in authentication vulnerability in the Auth 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 arbitrary files and conduct denial-of-service attacks.

Event History

Nov 12, 2026

CVE Published

via MITRE·03:32 AM

Data Sourced

via MITRE·03:32 AM

DescriptionSeverityWeakness

Data Sourced

via NVD·04:17 AM

DescriptionSeverityWeakness

Frequently Asked Questions

Who can exploit this issue?

A remote attacker must already be authenticated to the DSM Auth API. No user interaction is required.

What impact can exploitation have?

An authenticated remote attacker may read or write arbitrary files and cause denial-of-service conditions. The available impact metrics indicate high confidentiality, integrity, and availability impact.

Which DSM releases are affected?

DSM versions before 7.3.2-86009-5 and before 7.4.1-90080-1 are affected.

CVE-2026-74857: High severity vulnerability

Event History

Frequently Asked Questions

Who can exploit this issue?

What impact can exploitation have?

Which DSM releases are affected?

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Frequently Asked Questions

Who can exploit this issue?

What impact can exploitation have?

Which DSM releases are affected?