CVE-2021-29087: Path Traversal

Published Jun 23, 2021
·
Updated

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to write arbitrary files via unspecified vectors.

Affected Software

3 affected components
Synology Diskstation Manager>=6.2<6.2.3-25426-3
Synology Diskstation Manager Unified Controller<3.1-23033
Synology Diskstation Manager>=6.2<6.2.3-25426-3

Event History

Jun 23, 2021
CVE Published
via MITRE·09:55 AM
Data Sourced
via MITRE·09:55 AM
DescriptionSeverityWeakness

Frequently Asked Questions

1

What is the severity of CVE-2021-29087?

The severity of CVE-2021-29087 is high with a severity value of 7.5.

2

What is CVE-2021-29087?

CVE-2021-29087 is an 'Improper limitation of a pathname to a restricted directory (Path Traversal)' vulnerability in the webapi component in Synology DiskStation Manager (DSM) before version 6.2.3-25426-3.

3

How does CVE-2021-29087 impact Synology DiskStation Manager?

CVE-2021-29087 allows remote attackers to write arbitrary files via unspecified vectors, posing a security risk to the affected Synology DiskStation Manager (DSM) versions.

4

Which versions of Synology DiskStation Manager (DSM) are affected by CVE-2021-29087?

Versions of Synology DSM before 6.2.3-25426-3, including DiskStation Manager and Diskstation Manager Unified Controller versions up to 3.1-23033, are affected by CVE-2021-29087.

5

How can I fix CVE-2021-29087?

To fix CVE-2021-29087, it is recommended to update Synology DiskStation Manager (DSM) to version 6.2.3-25426-3 or later by following the instructions provided by Synology in their security advisory.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203