Incorrect Perm Assign in Synology DSM LDAP API <7.2.1, 7.2.2, 7.3.2, 7.4
CVE-2026-13673 Published on September 18, 2026
An incorrect permission assignment for critical resource vulnerability in LDAP 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 read or write arbitrary files and conduct denial-of-service attacks.
Vulnerability Analysis
CVE-2026-13673 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. When a resource is given a permissions setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution or sensitive user data.
Products Associated with CVE-2026-13673
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Affected Versions
Synology DiskStation Manager (DSM):- Version 7.4 and below 7.4-90075 is affected.
- Version 7.3.2 and below 7.3.2-86009-4 is affected.
- Version 7.2.2 and below 7.2.2-72806-9 is affected.
- Version 7.2.1 and below 7.2.1-69057-12 is affected.
- Before 7.2.1 is unknown.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.