CVE-2026-6205

HIGH

8.1

CVSS Score

Published: September 18, 2026 at 08:22 AM UTC

Updated: September 18, 2026 at 08:17 PM UTC

1 product affected across 1 vendorDiskStation Manager

Using DiskStation Manager (DSM) by Synology?

Get instant alerts when new vulnerabilities affect DiskStation Manager (DSM) - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH8.1

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

An external control of file name or path vulnerability in Upload API in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote authenticated users to write arbitrary files and conduct denial-of-service attacks.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

DiskStation Manager · Synology

60%

7.2.1 ≤ v < 7.2.1-69057-127.2.2 ≤ v < 7.2.2-72806-97.3.2 ≤ v < 7.3.2-86009-47.4 ≤ v < 7.4-900757.2.1 7.2.2 7.3.2 7.4

Affected range stops below 7.2.1-69057-12, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.2.2-72806-9, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3.2-86009-4, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.4-90075, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 7.2.1 (unknown)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

https://www.synology.com/en-global/security/advisory/Synology_SA_26_13

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHsynology

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-73

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card