CVE-2026-19414 · Infrastructure
NO FIX YET · SEE WHAT TO DO
The Promotion API in Synology DiskStation Manager lacks an authorization check, so a remote user with a valid account can write certain files on the NAS. The sources do not say what files or what further access follows from that write.
first public Nov 12, 2026 · 1 source
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DiskStation Manager versions before 7.3.2-86009-5 and 7.4.1-90080-1 are affected, and the attacker needs a valid account on the device. Systems where only administrators can log in remotely and that are kept on the patched builds are less exposed. The sources do not describe the default configuration of the Promotion API.
Not affected if no-remote-accounts, patched-dsm
Who cares dsm, nas, self-hosted, synology
7.3.2-86009-5 and 7.4.1-90080-17.3.2-86009-5 or later7.4.1-90080-1 or laterA missing authorization vulnerability in the Promotion API in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write specific files.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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