---
id: "CVE-2026-85098"
page: "https://infrastack.ai/live/CVE-2026-85098"
kind: "vulnerability"
aliases: ["CVE-2026-85098"]
title: "Synology DSM: reachable assertion in synoscgi allows limited denial of service"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["dsm", "infrastructure", "nas", "self-hosted", "synology"]
not_affected_if: ["fixed-version", "no-internet-exposure"]
published_at: "2026-11-12T04:17:21+00:00"
first_seen_at: "2026-11-12T04:47:10+00:00"
updated_at: "2026-11-12T04:47:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85098", "first_seen_at": "2026-11-12T04:47:10+00:00"}]
exploit_sources: []
---

# Synology DSM: reachable assertion in synoscgi allows limited denial of service

Link for people: https://infrastack.ai/live/CVE-2026-85098 (this .md is for agents)

A reachable assertion in the synoscgi component of Synology DiskStation Manager (DSM) lets remote attackers crash part of the service. The sources describe only a limited denial-of-service impact, with no code execution or data exposure stated.

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

## How to check

- Check the DSM version under Control Panel > Info Center and compare it with `7.3.2-86009-5` or `7.4.1-90080-1`

## Fix

- Move DSM 7.3 installs to `7.3.2-86009-5` or later
- Move DSM 7.4 installs to `7.4.1-90080-1` or later

## Timeline

- 2026-11-12T04:47:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-85098

## From the sources

A reachable assertion vulnerability in the synoscgi in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote attackers to conduct limited denial-of-service attacks.

---

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