SYNOLOGY DISKSTATION MANAGER · CVE-2026-18596 · Vendor
NO FIX YET · SEE WHAT TO DO
Synology DiskStation Manager has an authentication bypass in its one-time password (OTP) handling that uses an alternate path. A remote attacker who already holds a valid user's credentials can read or write arbitrary files and cause denial of service.
first public Nov 12, 2026 · 1 source
Check it with your coding agent
It reads this page and tells you if your code or app is affected.
Any Synology NAS running DSM below the fixed versions where remote users can sign in, including those who can reach the login page from the internet. Exposure depends on having valid user credentials, so accounts with weak or shared passwords raise the risk. unknown whether non-default settings change exposure.
Not affected if dsm-already-patched, no-remote-login-access
Who cares dsm, nas, self-hosted, synology
7.3.2-86009-5 is affected; move to 7.3.2-86009-5 or later.7.4.1-90080-1 is affected; move to 7.4.1-90080-1 or later.An authentication bypass using an alternate path or channel vulnerability in the OTP in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote attackers with valid user credentials to read or write arbitrary files and conduct denial-of-service attacks.
This page as .md · .json · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Are you affected?
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.
InfraStack checks it against your stack and answers on your report, with the evidence and the fix.