CVE-2026-13673 Missing authorization in DiskStation Manager (DSM)
Remote authenticated users can read or write arbitrary files and cause denial of service due to incorrect LDAP API permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13673?
CVE-2026-13673 is a high-severity missing authorization vulnerability in Synology DiskStation Manager (DSM), published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-732
Which versions are affected by CVE-2026-13673?
How do I fix CVE-2026-13673?
No fix has been published for CVE-2026-13673 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-13673 being exploited?
There is no known exploitation of CVE-2026-13673 in the wild and no public exploit code.
Sources
Also known as GHSA-xphp-4p54-2792.