---
id: "CVE-2026-16550"
page: "https://infrastack.ai/live/CVE-2026-16550"
kind: "vulnerability"
aliases: ["CVE-2026-16550"]
title: "Synology DSM: Media Parser flaw lets logged-in users write arbitrary files"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["dsm", "infrastructure", "nas", "self-hosted", "synology"]
not_affected_if: ["auth-required", "patched-dsm"]
published_at: "2026-11-12T04:17:18+00:00"
first_seen_at: "2026-11-12T04:47:08+00:00"
updated_at: "2026-11-12T04:47:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16550", "first_seen_at": "2026-11-12T04:47:08+00:00"}]
exploit_sources: []
---

# Synology DSM: Media Parser flaw lets logged-in users write arbitrary files

Link for people: https://infrastack.ai/live/CVE-2026-16550 (this .md is for agents)

A path-handling flaw in the Media Parser of Synology DiskStation Manager lets a remote user who is already logged in write files to arbitrary locations. The sources do not describe code execution, so the reach beyond file writes is unknown.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed DSM version in DSM under Control Panel > Info Center (version string not confirmed by sources)

## Fix

- Synology DSM before `7.3.2-86009-5` and `7.4.1-90080-1` is affected; move to a fixed release on the matching branch

## Timeline

- 2026-11-12T04:47:08+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-16550

## From the sources

An external control of file name or path vulnerability in the Media Parser in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write arbitrary files.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_