---
id: CVE-2025-13392
title: >-
  Improper check for unusual or exceptional conditions vulnerability in SSO in
  Synology DiskStation Manager (DSM) before 7.2.2-72806-5 and 7.3.1-86003-1
  (7.2.1-69057 is not affected) allows remote attackers to bypass authentication
  with pr…
summary: >-
  Improper check for unusual or exceptional conditions vulnerability in SSO in
  Synology DiskStation Manager (DSM) before 7.2.2-72806-5 and 7.3.1-86003-1
  (7.2.1-69057 is not affected) allows remote attackers to bypass authentication
  with pr…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-754
vendor: synology
product: diskstation_manager
affected:
  - 'diskstation_manager >= 7.2.2, < 7.2.2-72806-5'
  - 'diskstation_manager >= 7.3, <= 7.3.1-86003-1'
patched:
  - diskstation_manager 7.2.2-72806-5
published: '2026-05-27'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13392'
references:
  - url: 'https://www.synology.com/en-global/security/advisory/Synology_SA_25_14'
    label: security@synology.com
tags:
  - nvd
epss: 0.00533
epssPercentile: 0.4287
ingestedAt: '2026-09-30T21:25:07.732Z'
---

## Overview

Improper check for unusual or exceptional conditions vulnerability in SSO in Synology DiskStation Manager (DSM) before 7.2.2-72806-5 and 7.3.1-86003-1 (7.2.1-69057 is not affected) allows remote attackers to bypass authentication with prior knowledge of the distinguished name (DN).

## Affected

- `diskstation_manager >= 7.2.2, < 7.2.2-72806-5`
- `diskstation_manager >= 7.3, <= 7.3.1-86003-1`

## Remediation

Upgrade past the affected range:

- `diskstation_manager 7.2.2-72806-5`