CVE-2026-18792 · Infrastructure
NO FIX YET · SEE WHAT TO DO
Synology DiskStation Manager has a path-traversal flaw in its Sharing API that lets a remote, logged-in user read or write arbitrary files on the NAS. It can also be used to cause a denial of service.
first public Nov 12, 2026 · 1 source
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Any Synology NAS running DSM before the fixed versions, reachable by a remote user who holds a valid DSM account. Systems where DSM is not exposed to untrusted accounts are at lower risk. unknown whether the flaw depends on a non-default Sharing feature.
Not affected if no-untrusted-accounts, patched-dsm
Who cares dsm, nas, self-hosted, synology
cat /etc/VERSION over SSH if enabled7.3.2-86009-5 or later on the 7.3 branch7.4.1-90080-1 or later on the 7.4 branchAn improper limitation of a pathname to a restricted directory vulnerability in the Sharing 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.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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