CVE-2026-85101 · Infrastructure
NO FIX YET · SEE WHAT TO DO
The rsync service in Synology DiskStation Manager has an authentication bypass through an alternate path or channel. A remote attacker can read specific files, write arbitrary files, and cause limited denial of service.
first public Nov 12, 2026 · 1 source
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Synology NAS devices running DSM with the rsync service enabled are exposed. A device with rsync turned off or not reachable from the network is not exposed through this flaw. The sources do not say whether the attack needs credentials.
Not affected if patched-dsm, rsync-disabled
Who cares dsm, nas, rsync, self-hosted, synology
7.2.1-69057-13 or later on the 7.2.1 branch7.2.2-72806-10 or later on the 7.2.2 branch7.3.2-86009-5 or later on the 7.3.2 branch7.4.1-90080-1 or later on the 7.4.1 branchAn authentication bypass using an alternate path or channel vulnerability in the rsync in Synology DiskStation Manager (DSM) before 7.2.1-69057-13, 7.2.2-72806-10, 7.3.2-86009-5, and 7.4.1-90080-1 allows remote attackers to read specific files, write arbitrary files, and conduct limited denial-of-service attacks.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
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