# CVE-2026-40536: Synology DiskStation Manager path traversal in Audio API

Source: https://junglewise.ai/threats/cve-2026-40536-synology-diskstation-manager-path-traversal-in-audio-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-18. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-40536 · Severity: medium · CVSS 4.3 · Published 2026-09-18

Synology DiskStation Manager (DSM) is a network storage operating system used to manage and access files on Synology NAS devices. A path traversal vulnerability in the Audio API allows authenticated users to read non-sensitive files beyond their intended access boundaries, potentially exposing system information or configuration details that could aid further attacks.

Technologies: [Synology DiskStation Manager](https://junglewise.ai/threats/technologies/diskstation-manager). Vendors: [Synology](https://junglewise.ai/threats/vendors/synology).

## Quick answers

**Is CVE-2026-40536 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40536 being exploited in the wild.

**How severe is CVE-2026-40536?** Medium severity, with a CVSS score of 4.3, published 18 September 2026.

**Which products and versions are affected?** Synology DiskStation Manager before 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2.

**Is there a fix for CVE-2026-40536?** A patch was published on 2026-04-15: Patches released for DSM 7.2.1, 7.2.2, and 7.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-40536 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-40536?** Check whether you run Synology DiskStation Manager at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

CVE-2026-40536 is a path traversal vulnerability (CWE-22) in the Audio API of Synology DiskStation Manager that allows authenticated users to bypass directory restrictions and read files outside the intended scope. The vulnerability requires authentication and network access (CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N). An authenticated attacker can exploit this to obtain non-sensitive information by crafting specially-crafted requests with path traversal sequences. Synology has released patches addressing this vulnerability in DSM 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2 or later.

## Affected products

- Synology DiskStation Manager before 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2

## Timeline

- 2026-04-15: disclosed
- 2026-04-15: patched: Patches released for DSM 7.2.1, 7.2.2, and 7.3
- 2026-09-18: other: CVE-2026-40536 published on NVD

## References

- [https://www.synology.com/en-global/security/advisory/Synology_SA_26_06](https://www.synology.com/en-global/security/advisory/Synology_SA_26_06)

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